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  • 1. Aaboud, M.
    et al.
    Bergeås Kuutmann, Elin
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Bokan, Petar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Gradin, P.O. Joakim
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Madsen, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Öhman, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Rangel-Smith, Camilla
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Sales De Bruin, Pedro
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L.
    Performance of the ATLAS Transition Radiation Tracker in Run 1 of the LHC: tracker properties2017In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 12, article id P05002Article in journal (Refereed)
    Abstract [en]

    The tracking performance parameters of the ATLAS Transition Radiation Tracker (TRT) as part of the ATLAS inner detector are described in this paper for different data-taking conditions in proton-proton, proton-lead and lead-lead collisions at the Large Hadron Collider (LHC). The performance is studied using data collected during the first period of LHC operation (Run 1) and is compared with Monte Carlo simulations. The performance of the TRT, operating with two different gas mixtures (xenon-based and argon-based) and its dependence on the TRT occupancy is presented. These studies show that the tracking performance of the TRT is similar for the two gas mixtures and that a significant contribution to the particle momentum resolution is made by the TRT up to high particle densities.

  • 2. Aaboud, M.
    et al.
    Bergeås Kuutmann, Elin
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Bokan, Peter
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Gradin, P.O. Joakim
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Isacson, Max F.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Madsen, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Mårtensson, Mikael
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Öhman, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Rangel-Smith, Camilla
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    De Bruin, Pedro Sales
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L.
    Study of the material of the ATLAS inner detector for Run 2 of the LHC2017In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 12, no 12, article id P12009Article in journal (Refereed)
    Abstract [en]

    The ATLAS inner detector comprises three different sub-detectors: the pixel detector, the silicon strip tracker, and the transition-radiation drift-tube tracker. The Insertable B-Layer, a new innermost pixel layer, was installed during the shutdown period in 2014, together with modifications to the layout of the cables and support structures of the existing pixel detector. The material in the inner detector is studied with several methods, using a low-luminosity root s = 13 TeV pp collision sample corresponding to around 2.0 nb(-1) collected in 2015 with the ATLAS experiment at the LHC. In this paper, the material within the innermost barrel region is studied using reconstructed hadronic interaction and photon conversion vertices. For the forward rapidity region, the material is probed by a measurement of the efficiency with which single tracks reconstructed from pixel detector hits alone can be extended with hits on the track in the strip layers. The results of these studies have been taken into account in an improved description of the material in the ATLAS inner detector simulation, resulting in a reduction in the uncertainties associated with the charged-particle reconstruction efficiency determined from simulation.

  • 3. Aaboud, M.
    et al.
    Bergeås Kuutmann, Elin
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Gradin, P.O. Joakim
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Madsen, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Öhman, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Rangel-Smith, Camilla
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L.
    A measurement of material in the ATLAS tracker using secondary hadronic interactions in 7 TeV pp collisions2016In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 11, article id P11020Article in journal (Refereed)
    Abstract [en]

    Knowledge of the material in the ATLAS inner tracking detector is crucial in under-standing the reconstruction of charged-particle tracks, the performance of algorithms that identify jets containing b-hadrons and is also essential to reduce background in searches for exotic particles that can decay within the inner detector volume. Interactions of primary hadrons produced in pp collisions with the material in the inner detector are used to map the location and amount of this material. The hadronic interactions of primary particles may result in secondary vertices, which in this analysis are reconstructed by an inclusive vertex-finding algorithm. Data were collected using minimum-bias triggers by the ATLAS detector operating at the LHC during 2010 at centre-of-mass energy root s = 7 TeV, and correspond to an integrated luminosity of 19 nb(-1). Kinematic properties of these secondary vertices are used to study the validity of the modelling of hadronic interactions in simulation. Secondary-vertex yields are compared between data and simulation over a volume of about 0.7m(3) around the interaction point, and agreement is found within overall uncertainties.

  • 4. Aad, G.
    et al.
    Bergeås, Elin Kuutmann
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Isaksson, Charlie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Madsen, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Öhman, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Pelikan, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Rangel-Smith, Camilla
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L.
    Beam-induced and cosmic-ray backgrounds observed in the ATLAS detector during the LHC 2012 proton-proton running period2016In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 11, article id P05013Article in journal (Refereed)
    Abstract [en]

    This paper discusses various observations on beam-induced and cosmic-ray backgrounds in the ATLAS detector during the LHC 2012 proton-proton run. Building on published results based on 2011 data, the correlations between background and residual pressure of the beam vacuum are revisited. Ghost charge evolution over 2012 and its role for backgrounds are evaluated. New methods to monitor ghost charge with beam-gas rates are presented and observations of LHC abort gap population by ghost charge are discussed in detail. Fake jets from colliding bunches and from ghost charge are analysed with improved methods, showing that ghost charge in individual radio-frequency buckets of the LHC can be resolved. Some results of two short periods of dedicated cosmic-ray background data-taking are shown; in particular cosmic-ray muon induced fake jet rates are compared to Monte Carlo simulations and to the fake jet rates from beam background. A thorough analysis of a particular LHC fill, where abnormally high background was observed, is presented. Correlations between backgrounds and beam intensity losses in special fills with very high beta* are studied.

  • 5. Aad, G.
    et al.
    Bergeås, Elin Kuutmann
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Isaksson, Charlie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Madsen, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Öhman, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Pelikan, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Rangel-Smith, Camilla
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L.
    Performance of b-jet identification in the ATLAS experiment2016In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 11, article id P04008Article in journal (Refereed)
  • 6. Aad, G.
    et al.
    Bergeås Kuutmann, Elin
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Isaksson, Charlie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Madsen, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Öhman, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Pelikan, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Rangel-Smith, Camilla
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L.
    Modelling Z → ττ processes in ATLAS with τ-embedded Z → μμ data2015In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 10, article id P09018Article in journal (Refereed)
    Abstract [en]

    This paper describes the concept, technical realisation and validation of a largely data-driven method to model events with Z -> tau tau decays. In Z -> mu mu events selected from proton-proton collision data recorded at root s = 8 TeV with the ATLAS experiment at the LHC in 2012, the Z decay muons are replaced by tau leptons from simulated Z -> tau tau decays at the level of reconstructed tracks and calorimeter cells. The tau lepton kinematics are derived from the kinematics of the original muons. Thus, only the well-understood decays of the Z boson and tau leptons as well as the detector response to the tau decay products are obtained from simulation. All other aspects of the event, such as the Z boson and jet kinematics as well as effects from multiple interactions, are given by the actual data. This so-called tau-embedding method is particularly relevant for Higgs boson searches and analyses in tau tau final states, where Z -> tau tau decays constitute a large irreducible background that cannot be obtained directly from data control samples. In this paper, the relevant concepts are discussed based on the implementation used in the ATLAS Standard Model H -> tau tau analysis of the full datataset recorded during 2011 and 2012.

  • 7. Aad, G.
    et al.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Buszello, Claus P.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Coniavitis, Elias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Isaksson, Charlie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Madsen, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Pelikan, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L.
    Standalone vertex finding in the ATLAS muon spectrometer2014In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, p. P02001-Article in journal (Refereed)
    Abstract [en]

    A dedicated reconstruction algorithm to find decay vertices in the ATLAS muon spectrometer is presented. The algorithm searches the region just upstream of or inside the muon spectrometer volume for multi-particle vertices that originate from the decay of particles with long decay paths. The performance of the algorithm is evaluated using both a sample of simulated Higgs boson events, in which the Higgs boson decays to long-lived neutral particles that in turn decay to b (b) over bar final states, and pp collision data at root s = 7 TeV collected with the ATLAS detector at the LHC during 2011.

  • 8. Aad, G
    et al.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Buszello, Claus P
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Coniavitis, Elias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Isaksson, Charlie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Madsen, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Pelikan, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L
    Triggers for displaced decays of long-lived neutral particles in the ATLAS detector2013In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 8, p. P07015-Article in journal (Refereed)
    Abstract [en]

    A set of three dedicated triggers designed to detect long-lived neutral particles decaying throughout the ATLAS detector to a pair of hadronic jets is described. The efficiencies of the triggers for selecting displaced decays as a function of the decay position are presented for simulated events. The effect of pile-up interactions on the trigger efficiencies and the dependence of the trigger rate on instantaneous luminosity during the 2012 data-taking period at the LHC are discussed.

  • 9. Aad, G.
    et al.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Buszello, Claus P.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Coniavitis, Elias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Isaksson, Charlie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Madsen, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Öhman, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Pelikan, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Rangel-Smith, Camilla
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L.
    Operation and performance of the ATLAS semiconductor tracker2014In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, p. UNSP P08009-Article in journal (Refereed)
    Abstract [en]

    The semiconductor tracker is a silicon microstrip detector forming part of the inner tracking system of the ATLAS experiment at the LHC. The operation and performance of the semiconductor tracker during the first years of LHC running are described. More than 99% of the detector modules were operational during this period, with an average intrinsic hit efficiency of (99.74 +/- 0.04)%. The evolution of the noise occupancy is discussed, and measurements of the Lorentz angle, delta-ray production and energy loss presented. The alignment of the detector is found to be stable at the few-micron level over long periods of time. Radiation damage measurements, which include the evolution of detector leakage currents, are found to be consistent with predictions and are used in the verification of radiation background simulations.

  • 10. Aad, G.
    et al.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Buszello, Claus P.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Coniavitis, Elias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Isaksson, Charlie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Madsen, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Öhman, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Pelikan, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L.
    Monitoring and data quality assessment of the ATLAS liquid argon calorimeter2014In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, p. P07024-Article in journal (Refereed)
  • 11. Aad, G
    et al.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Buszello, Claus P
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Coniavitis, Elias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Isaksson, Charlie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Pelikan, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L
    Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run2013In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 8, p. P07004-Article in journal (Refereed)
    Abstract [en]

    This paper presents a summary of beam-induced backgrounds observed in the ATLAS detector and discusses methods to tag and remove background contaminated events in data. Trigger-rate based monitoring of beam-related backgrounds is presented. The correlations of backgrounds with machine conditions, such as residual pressure in thebeam-pipe, are discussed. Results from dedicated beam-background simulations are shown, and their qualitative agreement with data is evaluated. Data taken during the passage of unpaired, i.e. non-colliding, proton bunches is used to obtain background-enriched data samples. These are used to identify characteristic features of beam-inducedbackgrounds, which then are exploited to develop dedicated background tagging tools. These tools, based on observables in the Pixel detector, the muon spectrometer and the calorimeters, are described in detail and their efficiencies are evaluated. Finally an example of an application of these techniques to a monojet analysis is given, which demonstrates the importance of such event cleaning techniques for some new physics searches.

  • 12. Aad, G.
    et al.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Buszello, Claus P.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Isaksson, Charlie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Madsen, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Öhman, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Pelikan, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Rangel-Smith, Camilla
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L.
    A neural network clustering algorithm for the ATLAS silicon pixel detector2014In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, p. P09009-Article in journal (Refereed)
    Abstract [en]

     A novel technique to identify and split clusters created by multiple charged particles in the ATLAS pixel detector using a set of artificial neural networks is presented. Such merged clusters are a common feature of tracks originating from highly energetic objects, such as jets. Neural networks are trained using Monte Carlo samples produced with a detailed detector simulation. This technique replaces the former clustering approach based on a connected component analysis and charge interpolation. The performance of the neural network splitting technique is quantified using data from proton-proton collisions at the LHC collected by the ATLAS detector in 2011 and from Monte Carlo simulations. This technique reduces the number of clusters shared between tracks in highly energetic jets by up to a factor of three. It also provides more precise position and error estimates of the clusters in both the transverse and longitudinal impact parameter resolution.

  • 13. Aad, G.
    et al.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Buszello, Claus P.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ellert, Mattias
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Zwalinski, L.
    A study of the material in the ATLAS inner detector using secondary hadronic interactions2012In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 7, p. P01013-Article in journal (Refereed)
    Abstract [en]

    The ATLAS inner detector is used to reconstruct secondary vertices due to hadronic interactions of primary collision products, so probing the location and amount of material in the inner region of ATLAS. Data collected in 7 TeV pp collisions at the LHC, with a minimum bias trigger, are used for comparisons with simulated events. The reconstructed secondary vertices have spatial resolutions ranging from similar to 200 mu m to 1 mm. The overall material description in the simulation is validated to within an experimental uncertainty of about 7%. This will lead to a better understanding of the reconstruction of various objects such as tracks, leptons, jets, and missing transverse momentum.

  • 14. Aartsen, M. G.
    et al.
    Abbasi, R.
    Ackermann, M.
    Adams, J.
    Aguilar, J. A.
    Ahlers, M.
    Altmann, D.
    Arguelles, C.
    Auffenberg, J.
    Bai, X.
    Baker, M.
    Barwick, S. W.
    Baum, V.
    Bay, R.
    Beatty, J. J.
    Tjus, J. Becker
    Becker, K-H
    BenZvi, S.
    Berghaus, P.
    Berley, D.
    Bernardini, E.
    Bernhard, A.
    Besson, D. Z.
    Binder, G.
    Bindig, D.
    Bissok, M.
    Blaufuss, E.
    Blumenthal, J.
    Boersma, D. J.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Bohm, C.
    Bose, D.
    Boeser, S.
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Brayeur, L.
    Bretz, H-P
    Brown, A. M.
    Bruijn, R.
    Casey, J.
    Casier, M.
    Chirkin, D.
    Christov, A.
    Christy, B.
    Clark, K.
    Classen, L.
    Clevermann, F.
    Coenders, S.
    Cohen, S.
    Cowen, D. F.
    Silva, A. H. Cruz
    Danninger, M.
    Daughhetee, J.
    Davis, J. C.
    Day, M.
    De Clercq, C.
    De Ridder, S.
    Desiati, P.
    de Vries, K. D.
    de With, M.
    DeYoung, T.
    Diaz-Velez, J. C.
    Dunkman, M.
    Eagan, R.
    Eberhardt, B.
    Eichmann, B.
    Eisch, J.
    Euler, S.
    Evenson, P. A.
    Fadiran, O.
    Fazely, A. R.
    Fedynitch, A.
    Feintzeig, J.
    Feusels, T.
    Filimonov, K.
    Finley, C.
    Fischer-Wasels, T.
    Flis, S.
    Franckowiak, A.
    Frantzen, K.
    Fuchs, T.
    Gaisser, T. K.
    Gallagher, J.
    Gerhardt, L.
    Gladstone, L.
    Gluesenkamp, T.
    Goldschmidt, A.
    Golup, G.
    Gonzalez, J. G.
    Goodman, J. A.
    Gora, D.
    Grandmont, D. T.
    Grant, D.
    Gretskov, P.
    Groh, J. C.
    Gross, A.
    Ha, C.
    Ismail, A. Haj
    Hallen, P.
    Hallgren, Allan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Halzen, F.
    Hanson, K.
    Hebecker, D.
    Heereman, D.
    Heinen, D.
    Helbing, K.
    Hellauer, R.
    Hickford, S.
    Hill, G. C.
    Hoffman, K. D.
    Hoffmann, R.
    Homeier, A.
    Hoshina, K.
    Huang, F.
    Huelsnitz, W.
    Hulth, P. O.
    Hultqvist, K.
    Hussain, S.
    Ishihara, A.
    Jackson, S.
    Jacobi, E.
    Jacobsen, J.
    Jagielski, K.
    Japaridze, G. S.
    Jero, K.
    Jlelati, O.
    Kaminsky, B.
    Kappes, A.
    Karg, T.
    Karle, A.
    Kauer, M.
    Kelley, J. L.
    Kiryluk, J.
    Klaes, J.
    Klein, S. R.
    Koehne, J-H
    Kohnen, G.
    Kolanoski, H.
    Koepke, L.
    Kopper, C.
    Kopper, S.
    Koskinen, D. J.
    Kowalski, M.
    Krasberg, M.
    Kriesten, A.
    Krings, K.
    Kroll, G.
    Kunnen, J.
    Kurahashi, N.
    Kuwabara, T.
    Labare, M.
    Landsman, H.
    Larson, M. J.
    Lesiak-Bzdak, M.
    Leuermann, M.
    Leute, J.
    Luenemann, J.
    Macias, O.
    Madsen, J.
    Maggi, G.
    Maruyama, R.
    Mase, K.
    Matis, H. S.
    McNally, F.
    Meagher, K.
    Merck, M.
    Meures, T.
    Miarecki, S.
    Middell, E.
    Milke, N.
    Miller, J.
    Mohrmann, L.
    Montaruli, T.
    Morse, R.
    Nahnhauer, R.
    Naumann, U.
    Niederhausen, H.
    Nowicki, S. C.
    Nygren, D. R.
    Obertacke, A.
    Odrowski, S.
    Olivas, A.
    Omairat, A.
    O'Murchadha, A.
    Paul, L.
    Pepper, J. A.
    de los Heros, Carlos Perez
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Pfendner, C.
    Pieloth, D.
    Pinat, E.
    Posselt, J.
    Price, P. B.
    Przybylski, G. T.
    Quinnan, M.
    Raedel, L.
    Rameez, M.
    Rawlins, K.
    Redl, P.
    Reimann, R.
    Resconi, E.
    Rhode, W.
    Ribordy, M.
    Richman, M.
    Riedel, B.
    Robertson, S.
    Rodrigues, J. P.
    Rott, C.
    Ruhe, T.
    Ruzybayev, B.
    Ryckbosch, D.
    Saba, S. M.
    Sander, H-G
    Santander, M.
    Sarkar, S.
    Schatto, K.
    Scheriau, F.
    Schmidt, T.
    Schmitz, M.
    Schoenen, S.
    Schoeneberg, S.
    Schoenwald, A.
    Schukraft, A.
    Schulte, L.
    Schulz, O.
    Seckel, D.
    Sestayo, Y.
    Seunarine, S.
    Shanidze, R.
    Sheremata, C.
    Smith, M. W. E.
    Soldin, D.
    Spiczak, G. M.
    Spiering, C.
    Stamatikos, M.
    Stanev, T.
    Stanisha, N. A.
    Stasik, A.
    Stezelberger, T.
    Stokstad, R. G.
    Stoessl, A.
    Strahler, E. A.
    Ström, Rickard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Strotjohann, N. L.
    Sullivan, G. W.
    Taavola, Henric
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Taboada, I.
    Tamburro, A.
    Tepe, A.
    Ter-Antonyan, S.
    Tesic, G.
    Tilav, S.
    Toale, P. A.
    Tobin, M. N.
    Toscano, S.
    Tselengidou, M.
    Unger, E.
    Usner, M.
    Vallecorsa, S.
    van Eijndhoven, N.
    Van Overloop, A.
    van Santen, J.
    Vehring, M.
    Voge, M.
    Vraeghe, M.
    Walck, C.
    Waldenmaier, T.
    Wallraff, M.
    Weaver, Ch.
    Wellons, M.
    Wendt, C.
    Westerhoff, S.
    Whelan, B.
    Whitehorn, N.
    Wiebe, K.
    Wiebusch, C. H.
    Williams, D. R.
    Wissing, H.
    Wolf, M.
    Wood, T. R.
    Woschnagg, K.
    Xu, D. L.
    Xu, X. W.
    Yanez, J. P.
    Yodh, G.
    Yoshida, S.
    Zarzhitsky, P.
    Ziemann, J.
    Zierkea, S.
    Zoll, M.
    Energy reconstruction methods in the IceCube neutrino telescope2014In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, p. P03009-Article in journal (Refereed)
    Abstract [en]

    Accurate measurement of neutrino energies is essential to many of the scientific goals of large-volume neutrino telescopes. The fundamental observable in such detectors is the Cherenkov light produced by the transit through a medium of charged particles created in neutrino interactions. The amount of light emitted is proportional to the deposited energy, which is approximately equal to the neutrino energy for v(e) and v(mu) charged-current interactions and can be used to set a lower bound on neutrino energies and to measure neutrino spectra statistically in other channels. Here we describe methods and performance of reconstructing charged-particle energies and topologies from the observed Cherenkov light yield, including techniques to measure the energies of uncontained muon tracks, achieving average uncertainties in electromagnetic-equivalent deposited energy of similar to 15% above 10 TeV.

  • 15.
    Aartsen, M. G.
    et al.
    Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia..
    Abraham, K.
    Tech Univ Munich, Dept Phys, D-85748 Garching, Germany..
    Ackermann, M.
    DESY, D-15735 Zeuthen, Germany..
    Adams, J.
    Univ Canterbury, Dept Phys & Astron, Private Bag 4800, Christchurch, New Zealand..
    Aguilar, J. A.
    Univ Libre Bruxelles, Fac Sci, CP230, B-1050 Brussels, Belgium..
    Ahlers, M.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Ahrens, M.
    Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden..
    Altmann, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, D-91058 Erlangen, Germany..
    Andeen, K.
    Univ Wisconsin, Dept Phys, Milwaukee, WI 53201 USA..
    Anderson, T.
    Penn State Univ, Dept Phys, University Pk, PA 16802 USA..
    Ansseau, I.
    Univ Libre Bruxelles, Fac Sci, CP230, B-1050 Brussels, Belgium..
    Anton, G.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, D-91058 Erlangen, Germany..
    Archinger, M.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Arguelles, C.
    MIT, Dept Phys, Cambridge, MA 02139 USA..
    Auffenberg, J.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Axani, S.
    MIT, Dept Phys, Cambridge, MA 02139 USA..
    Bai, X.
    South Dakota Sch Mines & Technol, Dept Phys, Rapid City, SD 57701 USA..
    Barwick, S. W.
    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA..
    Baum, V.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Bay, R.
    Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA..
    Beatty, J. J.
    Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA.;Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.;Ohio State Univ, Dept Astron, Columbus, OH 43210 USA..
    Tjus, J. Becker
    Ruhr Univ Bochum, Fak Phys & Astron, D-44780 Bochum, Germany..
    Becker, K. -H
    BenZvi, S.
    Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA..
    Berley, D.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    Bernardini, E.
    Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.;DESY, D-15735 Zeuthen, Germany.;DESY, D-15735 Zeuthen, Germany..
    Bernhard, A.
    Tech Univ Munich, Dept Phys, D-85748 Garching, Germany..
    Besson, D. Z.
    Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA..
    Binder, G.
    Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.;Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA..
    Bindig, D.
    Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany..
    Bissok, M.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Blaufuss, E.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    Blot, S.
    DESY, D-15735 Zeuthen, Germany..
    Bohm, C.
    Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden..
    Borner, M.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Bos, F.
    Ruhr Univ Bochum, Fak Phys & Astron, D-44780 Bochum, Germany..
    Bose, D.
    Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea..
    Boser, S.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Braun, J.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Brayeur, L.
    Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium..
    Bretz, H. -P
    Bron, S.
    Univ Geneva, Dept Phys Nucl Corpusculaire, CH-1211 Geneva, Switzerland..
    Burgman, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Carver, T.
    Univ Geneva, Dept Phys Nucl Corpusculaire, CH-1211 Geneva, Switzerland..
    Casier, M.
    Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium..
    Cheung, E.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    Chirkin, D.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Christov, A.
    Univ Geneva, Dept Phys Nucl Corpusculaire, CH-1211 Geneva, Switzerland..
    Clark, K.
    Univ Toronto, Dept Phys, 60 St George St, Toronto, ON M5S 1A7, Canada..
    Classen, L.
    Westfalische Wilhelms Univ Munster, Inst Kernphys, D-48149 Munster, Germany..
    Coenders, S.
    Tech Univ Munich, Dept Phys, D-85748 Garching, Germany..
    Collin, G. H.
    MIT, Dept Phys, Cambridge, MA 02139 USA..
    Conrad, J. M.
    MIT, Dept Phys, Cambridge, MA 02139 USA..
    Cowen, D. F.
    Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.;Penn State Univ, Dept Phys, University Pk, PA 16802 USA..
    Cross, R.
    Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA..
    Day, M.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    de Andre, J. P. A. M.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    De Clercq, C.
    Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium..
    Rosendo, E. del Pino
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Dembinski, H.
    Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.;Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA..
    De Ridder, S.
    Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium..
    Desiati, P.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    de Vries, K. D.
    Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium..
    de Wasseige, G.
    Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium..
    de With, M.
    Humboldt Univ, Inst Phys, D-12489 Berlin, Germany..
    DeYoung, T.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Diaz-Velez, J. C.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    di Lorenzo, V.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Dujmovic, H.
    Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea..
    Dumm, J. P.
    Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden..
    Dunkman, M.
    Penn State Univ, Dept Phys, University Pk, PA 16802 USA..
    Eberhardt, B.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Ehrhardt, T.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Eichmann, B.
    Ruhr Univ Bochum, Fak Phys & Astron, D-44780 Bochum, Germany..
    Eller, P.
    Penn State Univ, Dept Phys, University Pk, PA 16802 USA..
    Euler, Sebastian
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Evenson, P. A.
    Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.;Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA..
    Fahey, S.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Fazely, A. R.
    Southern Univ, Dept Phys, Baton Rouge, LA 70813 USA..
    Feintzeig, J.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Felde, J.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    Filimonov, K.
    Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA..
    Finley, C.
    Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden..
    Flis, S.
    Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden..
    Fosig, C. -C
    Franckowiak, A.
    DESY, D-15735 Zeuthen, Germany..
    Franke, R.
    DESY, D-15735 Zeuthen, Germany..
    Friedman, E.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    Fuchs, T.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Gaisser, T. K.
    Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.;Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA..
    Gallagher, J.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA..
    Gerhardt, L.
    Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.;Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA..
    Ghorbani, K.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Giang, W.
    Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada..
    Gladstone, L.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Glauch, T.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Glusenkamp, T.
    DESY, D-15735 Zeuthen, Germany..
    Goldschmidt, A.
    Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA..
    Golup, G.
    Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium..
    Gonzalez, J. G.
    Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.;Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA..
    Grant, D.
    Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada..
    Griffith, Z.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Haack, C.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Ismail, A. Haj
    Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium..
    Hallgren, Allan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Halzen, F.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Hansen, E.
    Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark..
    Hansmann, T.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Hanson, K.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Hebecker, D.
    Humboldt Univ, Inst Phys, D-12489 Berlin, Germany..
    Heereman, D.
    Univ Libre Bruxelles, Fac Sci, CP230, B-1050 Brussels, Belgium..
    Helbing, K.
    Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany..
    Hellauer, R.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    Hickford, S.
    Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany..
    Hignight, J.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Hill, G. C.
    Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia..
    Hoffman, K. D.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    Hoffmann, R.
    Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany..
    Holzapfel, K.
    Tech Univ Munich, Dept Phys, D-85748 Garching, Germany..
    Hoshina, K.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA.;Univ Tokyo, Earthquake Res Inst, Bunkyo Ku, Tokyo 1130032, Japan..
    Huang, F.
    Penn State Univ, Dept Phys, University Pk, PA 16802 USA..
    Huber, M.
    Tech Univ Munich, Dept Phys, D-85748 Garching, Germany..
    Hultqvist, K.
    Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden..
    In, S.
    Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea..
    Ishihara, A.
    Chiba Univ, Dept Phys, Chiba 2638522, Japan.;Chiba Univ, Inst Global Prominent Res, Chiba 2638522, Japan..
    Jacobi, E.
    DESY, D-15735 Zeuthen, Germany..
    Japaridze, G. S.
    Clark Atlanta Univ, CTSPS, Atlanta, GA 30314 USA..
    Jeong, M.
    Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea..
    Jero, K.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Jones, B. J. P.
    MIT, Dept Phys, Cambridge, MA 02139 USA..
    Jurkovic, M.
    Tech Univ Munich, Dept Phys, D-85748 Garching, Germany..
    Kappes, A.
    Westfalische Wilhelms Univ Munster, Inst Kernphys, D-48149 Munster, Germany..
    Karg, T.
    DESY, D-15735 Zeuthen, Germany..
    Karle, A.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Katz, U.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, D-91058 Erlangen, Germany..
    Kauer, M.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Keivani, A.
    Penn State Univ, Dept Phys, University Pk, PA 16802 USA..
    Kelley, J. L.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Kheirandish, A.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Kim, M.
    Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea..
    Kintscher, T.
    DESY, D-15735 Zeuthen, Germany..
    Kiryluk, J.
    SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA..
    Kittler, T.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, D-91058 Erlangen, Germany..
    Klein, S. R.
    Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.;Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA..
    Kohnen, G.
    Univ Mons, B-7000 Mons, Belgium..
    Koirala, R.
    Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.;Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA..
    Kolanoski, H.
    Humboldt Univ, Inst Phys, D-12489 Berlin, Germany..
    Konietz, R.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Kopke, L.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Kopper, C.
    Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada..
    Kopper, S.
    Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany..
    Koskinen, D. J.
    Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark..
    Kowalski, M.
    Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.;DESY, D-15735 Zeuthen, Germany..
    Krings, K.
    Tech Univ Munich, Dept Phys, D-85748 Garching, Germany..
    Kroll, M.
    Ruhr Univ Bochum, Fak Phys & Astron, D-44780 Bochum, Germany..
    Kruckl, G.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Kruger, C.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Kunnen, J.
    Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium..
    Kunwar, S.
    DESY, D-15735 Zeuthen, Germany..
    Kurahashi, N.
    Drexel Univ, Dept Phys, 3141 Chestnut St, Philadelphia, PA 19104 USA..
    Kuwabara, T.
    Chiba Univ, Dept Phys, Chiba 2638522, Japan.;Chiba Univ, Inst Global Prominent Res, Chiba 2638522, Japan..
    Labare, M.
    Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium..
    Lanfranchi, J. L.
    Penn State Univ, Dept Phys, University Pk, PA 16802 USA..
    Larson, M. J.
    Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark..
    Lauber, F.
    Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany..
    Lennarz, D.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Lesiak-Bzdak, M.
    SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA..
    Leuermann, M.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Lu, L.
    Chiba Univ, Dept Phys, Chiba 2638522, Japan.;Chiba Univ, Inst Global Prominent Res, Chiba 2638522, Japan..
    Lunemann, J.
    Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium..
    Madsen, J.
    Univ Wisconsin, Dept Phys, River Falls, WI 54022 USA..
    Maggi, G.
    Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium..
    Mahn, K. B. M.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Mancina, S.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Mandelartz, M.
    Ruhr Univ Bochum, Fak Phys & Astron, D-44780 Bochum, Germany..
    Maruyama, R.
    Yale Univ, Dept Phys, New Haven, CT 06520 USA..
    Mase, K.
    Chiba Univ, Dept Phys, Chiba 2638522, Japan.;Chiba Univ, Inst Global Prominent Res, Chiba 2638522, Japan..
    Maunu, R.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    McNally, F.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Meagher, K.
    Univ Libre Bruxelles, Fac Sci, CP230, B-1050 Brussels, Belgium..
    Medici, M.
    Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark..
    Meier, M.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Meli, A.
    Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium..
    Menne, T.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Merino, G.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Meures, T.
    Univ Libre Bruxelles, Fac Sci, CP230, B-1050 Brussels, Belgium..
    Miarecki, S.
    Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.;Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA..
    Mohrmann, L.
    DESY, D-15735 Zeuthen, Germany..
    Montaruli, T.
    Univ Geneva, Dept Phys Nucl Corpusculaire, CH-1211 Geneva, Switzerland..
    Moulai, M.
    MIT, Dept Phys, Cambridge, MA 02139 USA..
    Nahnhauer, R.
    DESY, D-15735 Zeuthen, Germany..
    Naumann, U.
    Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany..
    Neer, G.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Niederhausen, H.
    SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA..
    Nowicki, S. C.
    Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada..
    Nygren, D. R.
    Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA..
    Pollmann, A. Obertacke
    Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany..
    Olivas, A.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    O'Murchadha, A.
    Univ Libre Bruxelles, Fac Sci, CP230, B-1050 Brussels, Belgium..
    Palczewski, T.
    Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA..
    Pandya, H.
    Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.;Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA..
    Pankova, D. V.
    Penn State Univ, Dept Phys, University Pk, PA 16802 USA..
    Peiffer, P.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Penek, O.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Pepper, J. A.
    Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA..
    de los Heros, Carlos Perez
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Pieloth, D.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Pinat, E.
    Univ Libre Bruxelles, Fac Sci, CP230, B-1050 Brussels, Belgium..
    Price, P. B.
    Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA..
    Przybylski, G. T.
    Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA..
    Quinnan, M.
    Penn State Univ, Dept Phys, University Pk, PA 16802 USA..
    Raab, C.
    Univ Libre Bruxelles, Fac Sci, CP230, B-1050 Brussels, Belgium..
    Radel, L.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Rameez, M.
    Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark..
    Rawlins, K.
    Univ Alaska Anchorage, Dept Phys & Astron, 3211 Providence Dr, Anchorage, AK 99508 USA..
    Reimann, R.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Relethford, B.
    Drexel Univ, Dept Phys, 3141 Chestnut St, Philadelphia, PA 19104 USA..
    Relich, M.
    Chiba Univ, Dept Phys, Chiba 2638522, Japan.;Chiba Univ, Inst Global Prominent Res, Chiba 2638522, Japan..
    Resconi, E.
    Tech Univ Munich, Dept Phys, D-85748 Garching, Germany..
    Rhode, W.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Richman, M.
    Drexel Univ, Dept Phys, 3141 Chestnut St, Philadelphia, PA 19104 USA..
    Riedel, B.
    Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada..
    Robertson, S.
    Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia..
    Rongen, M.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Rott, C.
    Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea..
    Ruhe, T.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Ryckbosch, D.
    Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium..
    Rysewyk, D.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Sabbatini, L.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Herrera, S. E. Sanchez
    Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada..
    Sandrock, A.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Sandroos, J.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Sarkar, S.
    Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark.;Univ Oxford, Dept Phys, 1 Keble Rd, Oxford OX1 3NP, England..
    Satalecka, K.
    DESY, D-15735 Zeuthen, Germany..
    Schlunder, P.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Schmidt, T.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    Schoenen, S.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Schoneberg, S.
    Ruhr Univ Bochum, Fak Phys & Astron, D-44780 Bochum, Germany..
    Schumacher, L.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Seckel, D.
    Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.;Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA..
    Seunarine, S.
    Univ Wisconsin, Dept Phys, River Falls, WI 54022 USA..
    Soldin, D.
    Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany..
    Song, M.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    Spiczak, G. M.
    Univ Wisconsin, Dept Phys, River Falls, WI 54022 USA..
    Spiering, C.
    DESY, D-15735 Zeuthen, Germany..
    Stanev, T.
    Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.;Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA..
    Stasik, A.
    DESY, D-15735 Zeuthen, Germany..
    Stettner, J.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Steuer, A.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Stezelberger, T.
    Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA..
    Stokstad, R. G.
    Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA..
    Stossl, A.
    DESY, D-15735 Zeuthen, Germany..
    Ström, Rickard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Strotjohann, N. L.
    DESY, D-15735 Zeuthen, Germany..
    Sullivan, G. W.
    Univ Maryland, Dept Phys, College Pk, MD 20742 USA..
    Sutherland, M.
    Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA.;Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA..
    Taavola, Henric
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Taboada, I.
    Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA.;Georgia Inst Technol, Ctr Relativist Astrophys, Atlanta, GA 30332 USA..
    Tatar, J.
    Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.;Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA..
    Tenholt, F.
    Ruhr Univ Bochum, Fak Phys & Astron, D-44780 Bochum, Germany..
    Ter-Antonyan, S.
    Southern Univ, Dept Phys, Baton Rouge, LA 70813 USA..
    Terliuk, A.
    DESY, D-15735 Zeuthen, Germany..
    Tesic, G.
    Penn State Univ, Dept Phys, University Pk, PA 16802 USA..
    Tilav, S.
    Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.;Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA..
    Toale, P. A.
    Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA..
    Tobin, M. N.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Toscano, S.
    Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium..
    Tosi, D.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Tselengidou, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, D-91058 Erlangen, Germany..
    Turcati, A.
    Tech Univ Munich, Dept Phys, D-85748 Garching, Germany..
    Unger, Elisabeth
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Usner, M.
    DESY, D-15735 Zeuthen, Germany..
    Vandenbroucke, J.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    van Eijndhoven, N.
    Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium..
    Vanheule, S.
    Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium..
    van Rossem, M.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    van Santen, J.
    DESY, D-15735 Zeuthen, Germany..
    Veenkamp, J.
    Tech Univ Munich, Dept Phys, D-85748 Garching, Germany..
    Vehring, M.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Voge, M.
    Univ Bonn, Inst Phys, Nussallee 12, D-53115 Bonn, Germany..
    Vogel, E.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Vraeghe, M.
    Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium..
    Walck, C.
    Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden..
    Wallace, A.
    Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia..
    Wallraff, M.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Wandkowsky, N.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Weaver, Ch.
    Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada..
    Weiss, M. J.
    Penn State Univ, Dept Phys, University Pk, PA 16802 USA..
    Wendt, C.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Westerhoff, S.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Whelan, B. J.
    Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia..
    Wickmann, S.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Wiebe, K.
    Johannes Gutenberg Univ Mainz, Inst Phys, Staudinger Weg 7, D-55099 Mainz, Germany..
    Wiebusch, C. H.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany..
    Wille, L.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Williams, D. R.
    Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA..
    Wills, L.
    Drexel Univ, Dept Phys, 3141 Chestnut St, Philadelphia, PA 19104 USA..
    Wolf, M.
    Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden..
    Wood, T. R.
    Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada..
    Woolsey, E.
    Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada..
    Woschnagg, K.
    Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA..
    Xu, D. L.
    Univ Wisconsin, Dept Astron, Madison, WI 53706 USA.;Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA..
    Xu, X. W.
    Southern Univ, Dept Phys, Baton Rouge, LA 70813 USA..
    Xu, Y.
    SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA..
    Yanez, J. P.
    DESY, D-15735 Zeuthen, Germany..
    Yodh, G.
    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA..
    Yoshida, S.
    Chiba Univ, Dept Phys, Chiba 2638522, Japan.;Chiba Univ, Inst Global Prominent Res, Chiba 2638522, Japan..
    Zoll, M.
    South Dakota Sch Mines & Technol, Dept Phys, Rapid City, SD 57701 USA.;Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden..
    Ahnen, M. L.
    Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland..
    Ansoldi, S.
    Univ Udine, I-33100 Udine, Italy.;INFN Trieste, I-33100 Udine, Italy..
    Antonelli, L. A.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Antoranz, P.
    Univ Siena, I-53100 Siena, Italy.;INFN Pisa, I-53100 Siena, Italy..
    Babic, A.
    Univ Split, Univ Rijeka, Rudjer Boskov Inst, Croatian MAGIC Consortium, Split, Croatia.;Univ Zagreb, Zagreb, Croatia..
    Banerjee, B.
    Saha Inst Nucl Phys, 1 AF Bidhannagar,Salt Lake,Sector 1, Kolkata 700064, India..
    Bangale, P.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    de Almeida, U. Barres
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.;MCTI, CBPF, R Dr Xavier Sigaud 150 Urca, BR-22290180 Rio De Janeiro, RJ, Brazil..
    Barrio, J. A.
    Univ Complutense, E-28040 Madrid, Spain..
    Gonzalez, J. Becerra
    Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dpto Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain.;NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.;Univ Maryland, Dept Phys, College Pk, MD 20742 USA.;Univ Maryland, Dept Astron, College Pk, MD 20742 USA..
    Bednarek, W.
    Univ Lodz, PL-90236 Lodz, Poland..
    Berti, A.
    Univ Udine, I-33100 Udine, Italy.;INFN Trieste, I-33100 Udine, Italy.;Univ Trieste, Trieste, Italy..
    Biasuzzi, B.
    Univ Udine, I-33100 Udine, Italy.;INFN Trieste, I-33100 Udine, Italy..
    Biland, A.
    Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland..
    Blanch, O.
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain..
    Bonnefoy, S.
    Univ Complutense, E-28040 Madrid, Spain..
    Bonnoli, G.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Borracci, F.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Bretz, T.
    Univ Wurzburg, D-97074 Wurzburg, Germany.;Ecole Polytech Fed Lausanne, Lausanne, Switzerland..
    Buson, S.
    Univ Padua, I-35131 Padua, Italy.;INFN, I-35131 Padua, Italy..
    Carosi, A.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Chatterjee, A.
    Saha Inst Nucl Phys, 1 AF Bidhannagar,Salt Lake,Sector 1, Kolkata 700064, India..
    Clavero, R.
    Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dpto Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain..
    Colin, P.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Colombo, E.
    Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dpto Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain..
    Contreras, J. L.
    Univ Complutense, E-28040 Madrid, Spain..
    Cortina, J.
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain..
    Covino, S.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Da Vela, P.
    Univ Siena, I-53100 Siena, Italy.;INFN Pisa, I-53100 Siena, Italy..
    Dazzi, F.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    De Angelis, A.
    Univ Padua, I-35131 Padua, Italy.;INFN, I-35131 Padua, Italy..
    De Lotto, B.
    Univ Udine, I-33100 Udine, Italy.;INFN Trieste, I-33100 Udine, Italy..
    Wilhelmi, E. de Ona
    CSIC, IEEC, Inst Space Sci, E-08193 Barcelona, Spain..
    Di Pierro, F.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Doert, M.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Dominguez, A.
    Univ Complutense, E-28040 Madrid, Spain..
    Prester, D. Dominis
    Univ Split, Univ Rijeka, Rudjer Boskov Inst, Croatian MAGIC Consortium, Split, Croatia.;Univ Zagreb, Zagreb, Croatia..
    Dorner, D.
    Univ Wurzburg, D-97074 Wurzburg, Germany..
    Doro, M.
    Univ Padua, I-35131 Padua, Italy.;INFN, I-35131 Padua, Italy..
    Einecke, S.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Glawion, D. Eisenacher
    Univ Wurzburg, D-97074 Wurzburg, Germany..
    Elsaesser, D.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Engelkemeier, M.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Ramazani, V. Fallah
    Univ Turku, Tuorla Observ, Finnish MAGIC Consortium, Turku, Finland.;Univ Oulu, Astron Div, Oulu, Finland..
    Fernandez-Barral, A.
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain..
    Fidalgo, D.
    Univ Complutense, E-28040 Madrid, Spain..
    Fonseca, M. V.
    Univ Complutense, E-28040 Madrid, Spain..
    Font, L.
    Univ Autonoma Barcelona, Dept Fis, Unitat Fis Radiac, E-08193 Barcelona, Spain.;Univ Autonoma Barcelona, CERES, IEEC, E-08193 Barcelona, Spain..
    Frantzen, K.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Fruck, C.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Galindo, D.
    Univ Barcelona, ICC, IEEC, E-08028 Barcelona, Spain..
    Lopez, R. J. Garcia
    Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dpto Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain..
    Garczarczyk, M.
    DESY, D-15735 Zeuthen, Germany..
    Terrats, D. Garrido
    Univ Autonoma Barcelona, Dept Fis, Unitat Fis Radiac, E-08193 Barcelona, Spain.;Univ Autonoma Barcelona, CERES, IEEC, E-08193 Barcelona, Spain..
    Gaug, M.
    Univ Autonoma Barcelona, Dept Fis, Unitat Fis Radiac, E-08193 Barcelona, Spain.;Univ Autonoma Barcelona, CERES, IEEC, E-08193 Barcelona, Spain..
    Giammaria, P.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Godinovic, N.
    Univ Split, Univ Rijeka, Rudjer Boskov Inst, Croatian MAGIC Consortium, Split, Croatia.;Univ Zagreb, Zagreb, Croatia..
    Munoz, A. Gonzalez
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain..
    Gora, D.
    Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.;DESY, D-15735 Zeuthen, Germany..
    Guberman, D.
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain..
    Hadasch, D.
    Univ Tokyo, Japanese MAGIC Consortium, ICRR, Tokyo, Japan.;Kyoto Univ, Dept Phys, Kyoto, Japan.;Kyoto Univ, Hakubi Ctr, Kyoto, Japan.;Tokai Univ, Hiratsuka, Kanagawa, Japan.;Univ Tokushima, Tokushima, Japan.;KEK, Tokyo, Japan..
    Hahn, A.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Hanabata, Y.
    Univ Tokyo, Japanese MAGIC Consortium, ICRR, Tokyo, Japan.;Kyoto Univ, Dept Phys, Kyoto, Japan.;Kyoto Univ, Hakubi Ctr, Kyoto, Japan.;Tokai Univ, Hiratsuka, Kanagawa, Japan.;Univ Tokushima, Tokushima, Japan.;KEK, Tokyo, Japan..
    Hayashida, M.
    Univ Tokyo, Japanese MAGIC Consortium, ICRR, Tokyo, Japan.;Kyoto Univ, Dept Phys, Kyoto, Japan.;Kyoto Univ, Hakubi Ctr, Kyoto, Japan.;Tokai Univ, Hiratsuka, Kanagawa, Japan.;Univ Tokushima, Tokushima, Japan.;KEK, Tokyo, Japan..
    Herrera, J.
    Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dpto Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain..
    Hose, J.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Hrupec, D.
    Univ Split, Univ Rijeka, Rudjer Boskov Inst, Croatian MAGIC Consortium, Split, Croatia.;Univ Zagreb, Zagreb, Croatia..
    Hughes, G.
    Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland..
    Idec, W.
    Univ Lodz, PL-90236 Lodz, Poland..
    Kodani, K.
    Univ Tokyo, Japanese MAGIC Consortium, ICRR, Tokyo, Japan.;Kyoto Univ, Dept Phys, Kyoto, Japan.;Kyoto Univ, Hakubi Ctr, Kyoto, Japan.;Tokai Univ, Hiratsuka, Kanagawa, Japan.;Univ Tokushima, Tokushima, Japan.;KEK, Tokyo, Japan..
    Konno, Y.
    Univ Tokyo, Japanese MAGIC Consortium, ICRR, Tokyo, Japan.;Kyoto Univ, Dept Phys, Kyoto, Japan.;Kyoto Univ, Hakubi Ctr, Kyoto, Japan.;Tokai Univ, Hiratsuka, Kanagawa, Japan.;Univ Tokushima, Tokushima, Japan.;KEK, Tokyo, Japan..
    Kubo, H.
    Univ Tokyo, Japanese MAGIC Consortium, ICRR, Tokyo, Japan.;Kyoto Univ, Dept Phys, Kyoto, Japan.;Kyoto Univ, Hakubi Ctr, Kyoto, Japan.;Tokai Univ, Hiratsuka, Kanagawa, Japan.;Univ Tokushima, Tokushima, Japan.;KEK, Tokyo, Japan..
    Kushida, J.
    Univ Tokyo, Japanese MAGIC Consortium, ICRR, Tokyo, Japan.;Kyoto Univ, Dept Phys, Kyoto, Japan.;Kyoto Univ, Hakubi Ctr, Kyoto, Japan.;Tokai Univ, Hiratsuka, Kanagawa, Japan.;Univ Tokushima, Tokushima, Japan.;KEK, Tokyo, Japan..
    La Barbera, A.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Lelas, D.
    Univ Split, Univ Rijeka, Rudjer Boskov Inst, Croatian MAGIC Consortium, Split, Croatia.;Univ Zagreb, Zagreb, Croatia..
    Lindfors, E.
    Univ Turku, Tuorla Observ, Finnish MAGIC Consortium, Turku, Finland.;Univ Oulu, Astron Div, Oulu, Finland..
    Lombardi, S.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Longo, F.
    Univ Udine, I-33100 Udine, Italy.;INFN Trieste, I-33100 Udine, Italy.;Univ Trieste, Trieste, Italy..
    Lopez, M.
    Univ Complutense, E-28040 Madrid, Spain..
    Lopez-Coto, R.
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain.;Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Majumdar, P.
    Saha Inst Nucl Phys, 1 AF Bidhannagar,Salt Lake,Sector 1, Kolkata 700064, India..
    Makariev, M.
    Inst Nucl Energy Res, BG-1784 Sofia, Bulgaria..
    Mallot, K.
    DESY, D-15735 Zeuthen, Germany..
    Maneva, G.
    Inst Nucl Energy Res, BG-1784 Sofia, Bulgaria..
    Manganaro, M.
    Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dpto Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain..
    Mannheim, K.
    Univ Wurzburg, D-97074 Wurzburg, Germany..
    Maraschi, L.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Marcote, B.
    Univ Barcelona, ICC, IEEC, E-08028 Barcelona, Spain..
    Mariotti, M.
    Univ Padua, I-35131 Padua, Italy.;INFN, I-35131 Padua, Italy..
    Martinez, M.
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain..
    Mazin, D.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.;Japanese MAGIC Consortium, Tokyo, Japan..
    Menzel, U.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Miranda, J. M.
    Univ Siena, I-53100 Siena, Italy.;INFN Pisa, I-53100 Siena, Italy..
    Mirzoyan, R.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Moralejo, A.
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain..
    Moretti, E.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Nakajima, D.
    Univ Tokyo, Japanese MAGIC Consortium, ICRR, Tokyo, Japan.;Kyoto Univ, Dept Phys, Kyoto, Japan.;Kyoto Univ, Hakubi Ctr, Kyoto, Japan.;Tokai Univ, Hiratsuka, Kanagawa, Japan.;Univ Tokushima, Tokushima, Japan.;KEK, Tokyo, Japan..
    Neustroev, V.
    Univ Turku, Tuorla Observ, Finnish MAGIC Consortium, Turku, Finland.;Univ Oulu, Astron Div, Oulu, Finland..
    Niedzwiecki, A.
    Univ Lodz, PL-90236 Lodz, Poland..
    Rosillo, M. Nievas
    Univ Complutense, E-28040 Madrid, Spain..
    Nilsson, K.
    Univ Turku, Tuorla Observ, Finnish MAGIC Consortium, Turku, Finland.;Univ Oulu, Astron Div, Oulu, Finland.;ESO FINCA, Finnish Ctr Astron, Turku, Finland..
    Nishijima, K.
    Univ Tokyo, Japanese MAGIC Consortium, ICRR, Tokyo, Japan.;Kyoto Univ, Dept Phys, Kyoto, Japan.;Kyoto Univ, Hakubi Ctr, Kyoto, Japan.;Tokai Univ, Hiratsuka, Kanagawa, Japan.;Univ Tokushima, Tokushima, Japan.;KEK, Tokyo, Japan..
    Noda, K.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Nogues, L.
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain..
    Overkemping, A.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Paiano, S.
    Univ Padua, I-35131 Padua, Italy.;INFN, I-35131 Padua, Italy..
    Palacio, J.
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain..
    Palatiello, M.
    Univ Udine, I-33100 Udine, Italy.;INFN Trieste, I-33100 Udine, Italy..
    Paneque, D.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Paoletti, R.
    Univ Siena, I-53100 Siena, Italy.;INFN Pisa, I-53100 Siena, Italy..
    Paredes, J. M.
    Univ Barcelona, ICC, IEEC, E-08028 Barcelona, Spain..
    Paredes-Fortuny, X.
    Univ Barcelona, ICC, IEEC, E-08028 Barcelona, Spain..
    Pedaletti, G.
    DESY, D-15735 Zeuthen, Germany..
    Peresano, M.
    Univ Udine, I-33100 Udine, Italy.;INFN Trieste, I-33100 Udine, Italy..
    Perri, L.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Persic, M.
    DESY, D-15735 Zeuthen, Germany.;INAF Trieste, Trieste, Italy.;Univ Bologna, Dept Phys & Astron, Bologna, Italy..
    Poutanen, J.
    Univ Turku, Tuorla Observ, Finnish MAGIC Consortium, Turku, Finland.;Univ Oulu, Astron Div, Oulu, Finland..
    Moroni, P. G. Prada
    Univ Pisa, I-56126 Pisa, Italy.;INFN Pisa, I-56126 Pisa, Italy..
    Prandini, E.
    Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland.;ISDC Sci Data Ctr Astrophys, CH-1290 Geneva, Switzerland..
    Puljak, I.
    Univ Split, Univ Rijeka, Rudjer Boskov Inst, Croatian MAGIC Consortium, Split, Croatia.;Univ Zagreb, Zagreb, Croatia..
    Reichardt, I.
    Univ Padua, I-35131 Padua, Italy.;INFN, I-35131 Padua, Italy..
    Ribo, M.
    Univ Barcelona, ICC, IEEC, E-08028 Barcelona, Spain..
    Rico, J.
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain..
    Garcia, J. Rodriguez
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Saito, T.
    Univ Tokyo, Japanese MAGIC Consortium, ICRR, Tokyo, Japan.;Kyoto Univ, Dept Phys, Kyoto, Japan.;Kyoto Univ, Hakubi Ctr, Kyoto, Japan.;Tokai Univ, Hiratsuka, Kanagawa, Japan.;Univ Tokushima, Tokushima, Japan.;KEK, Tokyo, Japan..
    Schroeder, S.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Schultz, C.
    Univ Padua, I-35131 Padua, Italy.;INFN, I-35131 Padua, Italy..
    Schweizer, T.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Sillanpaa, A.
    Univ Turku, Tuorla Observ, Finnish MAGIC Consortium, Turku, Finland.;Univ Oulu, Astron Div, Oulu, Finland..
    Sitarek, J.
    Univ Lodz, PL-90236 Lodz, Poland..
    Snidaric, I.
    Univ Split, Univ Rijeka, Rudjer Boskov Inst, Croatian MAGIC Consortium, Split, Croatia.;Univ Zagreb, Zagreb, Croatia..
    Sobczynska, D.
    Univ Lodz, PL-90236 Lodz, Poland..
    Stamerra, A.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Steinbring, T.
    Univ Wurzburg, D-97074 Wurzburg, Germany..
    Strzys, M.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Suric, T.
    Univ Split, Univ Rijeka, Rudjer Boskov Inst, Croatian MAGIC Consortium, Split, Croatia.;Univ Zagreb, Zagreb, Croatia..
    Takalo, L.
    Univ Turku, Tuorla Observ, Finnish MAGIC Consortium, Turku, Finland.;Univ Oulu, Astron Div, Oulu, Finland..
    Tavecchio, F.
    INAF Natl Inst Astrophys, I-00136 Rome, Italy..
    Temnikov, P.
    Inst Nucl Energy Res, BG-1784 Sofia, Bulgaria..
    Terzic, T.
    Univ Split, Univ Rijeka, Rudjer Boskov Inst, Croatian MAGIC Consortium, Split, Croatia.;Univ Zagreb, Zagreb, Croatia..
    Tescaro, D.
    CSIC, IEEC, Inst Space Sci, E-08193 Barcelona, Spain..
    Teshima, M.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.;Japanese MAGIC Consortium, Tokyo, Japan..
    Thaele, J.
    TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany..
    Torres, D. F.
    ICREA, E-08193 Barcelona, Spain.;CSIC, IEEC, Inst Space Sci, E-08193 Barcelona, Spain..
    Toyama, T.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Treves, A.
    DESY, D-15735 Zeuthen, Germany..
    Vanzo, G.
    Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dpto Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain..
    Verguilov, V.
    Inst Nucl Energy Res, BG-1784 Sofia, Bulgaria..
    Vovk, I.
    Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
    Ward, J. E.
    IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain..
    Will, M.
    Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dpto Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain..
    Wu, M. H.
    CSIC, IEEC, Inst Space Sci, E-08193 Barcelona, Spain..
    Zanin, R.
    Univ Barcelona, ICC, IEEC, E-08028 Barcelona, Spain.;Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Abeysekara, A. U.
    Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA..
    Archambault, S.
    McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada..
    Archer, A.
    Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany.;Univ Maryland, Dept Phys, College Pk, MD 20742 USA.;Washington Univ, Dept Phys, St Louis, MO 63130 USA..
    Benbow, W.
    Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA..
    Bird, R.
    Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA..
    Bourbeau, E.
    McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada..
    Buchovecky, M.
    Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA..
    Bugaev, V.
    Washington Univ, Dept Phys, St Louis, MO 63130 USA..
    Byrum, K.
    Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA..
    Cardenzana, J. V.
    Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA..
    Cerruti, M.
    Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA..
    Ciupik, L.
    Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA..
    Connolly, M. P.
    Natl Univ Ireland Galway, Sch Phys, Univ Rd, Galway, Ireland..
    Cui, W.
    Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA.;Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.;Tsinghua Univ, Ctr Astrophys, Beijing 100084, Peoples R China..
    Dickinson, H. J.
    Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA..
    Dumm, J.
    Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA..
    Eisch, J. D.
    Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA..
    Errando, M.
    Washington Univ, Dept Phys, St Louis, MO 63130 USA..
    Falcone, A.
    Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA..
    Feng, Q.
    McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada..
    Finley, J. P.
    Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA..
    Fleischhack, H.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Flinders, A.
    Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA..
    Fortson, L.
    Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA..
    Furniss, A.
    Calif State Univ East Bay, Dept Phys, Hayward, CA 94542 USA..
    Gillanders, G. H.
    Natl Univ Ireland Galway, Sch Phys, Univ Rd, Galway, Ireland..
    Griffin, S.
    McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada..
    Grube, J.
    Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA..
    Hutten, M.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Hakansson, N.
    Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany..
    Hervet, O.
    Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.;Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA..
    Holder, J.
    Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA.;Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA..
    Humensky, T. B.
    Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA..
    Johnson, C. A.
    Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.;Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA..
    Kaaret, P.
    Univ Iowa, Dept Phys & Astron, Van Allen Hall, Iowa City, IA 52242 USA..
    Kar, P.
    Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA..
    Kelley-Hoskins, N.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Kertzman, M.
    Depauw Univ, Dept Phys & Astron, Greencastle, IN 46135 USA..
    Kieda, D.
    Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA..
    Krause, M.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Krennrich, F.
    Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA..
    Kumar, S.
    Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA.;Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA..
    Lang, M. J.
    Natl Univ Ireland Galway, Sch Phys, Univ Rd, Galway, Ireland..
    Maier, G.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    McArthur, S.
    Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA..
    McCann, A.
    McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada..
    Moriarty, P.
    Natl Univ Ireland Galway, Sch Phys, Univ Rd, Galway, Ireland..
    Mukherjee, R.
    Columbia Univ, Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA..
    Nguyen, T.
    Georgia Inst Technol, Sch Phys, 837 State St NW, Atlanta, GA 30332 USA.;Georgia Inst Technol, Ctr Relativist Astrophys, 837 State St NW, Atlanta, GA 30332 USA..
    Nieto, D.
    Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA..
    O'Brien, S.
    Univ Coll Dublin, Sch Phys, Dublin 4, Ireland..
    Ong, R. A.
    Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA..
    Otte, A. N.
    Georgia Inst Technol, Sch Phys, 837 State St NW, Atlanta, GA 30332 USA.;Georgia Inst Technol, Ctr Relativist Astrophys, 837 State St NW, Atlanta, GA 30332 USA..
    Park, N.
    Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA..
    Pohl, M.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany.;Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany..
    Popkow, A.
    Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA..
    Pueschel, E.
    Univ Coll Dublin, Sch Phys, Dublin 4, Ireland..
    Quinn, J.
    Univ Coll Dublin, Sch Phys, Dublin 4, Ireland..
    Ragan, K.
    McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada..
    Reynolds, P. T.
    Cork Inst Technol, Dept Phys Sci, Cork, Ireland..
    Richards, G. T.
    Georgia Inst Technol, Sch Phys, 837 State St NW, Atlanta, GA 30332 USA.;Georgia Inst Technol, Ctr Relativist Astrophys, 837 State St NW, Atlanta, GA 30332 USA..
    Roache, E.
    Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA..
    Rulten, C.
    Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA..
    Sadeh, I.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Santander, M.
    Columbia Univ, Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA..
    Sembroski, G. H.
    Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA..
    Shahinyan, K.
    Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA..
    Staszak, D.
    Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA..
    Telezhinsky, I.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany.;Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany..
    Tucci, J. V.
    Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA..
    Tyler, J.
    McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada..
    Wakely, S. P.
    Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA..
    Weinstein, A.
    Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA..
    Wilcox, P.
    Univ Iowa, Dept Phys & Astron, Van Allen Hall, Iowa City, IA 52242 USA..
    Wilhelm, A.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany.;Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany..
    Williams, D. A.
    Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.;Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA..
    Zitzer, B.
    McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada..
    Very high-energy gamma-ray follow-up program using neutrino triggers from IceCube2016In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 11, article id P11009Article in journal (Refereed)
    Abstract [en]

    We describe and report the status of a neutrino-triggered program in IceCube that generates real-time alerts for gamma-ray follow-up observations by atmospheric-Cherenkov telescopes (MAGIC and VERITAS). While IceCube is capable of monitoring the whole sky continuously, high-energy gamma-ray telescopes have restricted fields of view and in general are unlikely to be observing a potential neutrino-flaring source at the time such neutrinos are recorded. The use of neutrino-triggered alerts thus aims at increasing the availability of simultaneous multi-messenger data during potential neutrino flaring activity, which can increase the discovery potential and constrain the phenomenological interpretation of the high-energy emission of selected source classes (e. g. blazars). The requirements of a fast and stable online analysis of potential neutrino signals and its operation are presented, along with first results of the program operating between 14 March 2012 and 31 December 2015.

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    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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    Leney, K.
    Lenz, S.
    Lester, C. G.
    Liang, Z.
    Liebicher, K.
    Limper, M.
    Lindquist, L. E.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Lindsay, S.
    Linhart, V.
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    Zhu, H.
    Engineering for the ATLAS SemiConductor Tracker (SCT) end-cap2008In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 3, article id P05002Article in journal (Refereed)
    Abstract [en]

    The ATLAS SemiConductor Tracker (SCT) is a silicon-strip tracking detector which forms part of the ATLAS inner detector. The SCT is designed to track charged particles produced in proton-proton collisions at the Large Hadron Collider (LHC) at CERN at an energy of 14 TeV. The tracker is made up of a central barrel and two identical end-caps. The barrel contains 2112 silicon modules, while each end-cap contains 988 modules. The overall tracking performance depends not only on the intrinsic measurement precision of the modules but also on the characteristics of the whole assembly, in particular, the stability and the total material budget. This paper describes the engineering design and construction of the SCT end-caps, which are required to support mechanically the silicon modules, supply services to them and provide a suitable environment within the inner detector. Critical engineering choices are highlighted and innovative solutions are presented - these will be of interest to other builders of large-scale tracking detectors. The SCT end-caps will be fully connected at the start of 2008. Further commissioning will continue, to be ready for proton-proton collision data in 2008.

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    NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA..
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    McGill Univ, Dept Phys, Montreal, PQ, Canada..
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    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.;Sapienza Univ Roma, Dipartimento Fis, Rome, Italy..
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    Univ Fed Rio de Janeiro, COPPE EE IF, Rio De Janeiro, Brazil..
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    SLAC Natl Accelerator Lab, Stanford, CA USA..
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    Univ Autonoma Barcelona, Inst Fis Altes Energies, Barcelona, Spain.;Univ Autonoma Barcelona, Dept Fis, Barcelona, Spain..
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    Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy.;Univ Napoli Parthenope, Naples, Italy..
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    McGill Univ, Dept Phys, Montreal, PQ, Canada..
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    Univ Fed Rio de Janeiro, COPPE EE IF, Rio De Janeiro, Brazil..
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    NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA..
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    UCL, Dept Phys & Astron, London, England..
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    UCL, Dept Phys & Astron, London, England..
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    Yale Univ, Dept Phys, New Haven, CT USA..
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    Univ Copenhagen, Niels Bohr Inst, Copenhagen, Denmark..
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    Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA..
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    Univ Geneva, Sect Phys, Geneva, Switzerland..
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    Univ Politecn Bucharest, Bucharest, Romania. West Univ Timisoara, Timisoara, Romania.;CERN, Geneva, Switzerland..
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    UPMC, Lab Phys Nucl & Hautes Energies, Paris, France.;Univ Paris Diderot, Paris, France.;CNRS IN2P3, Paris, France..
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    Rutherford Appleton Lab, Particle Phys Dept, Didcot, Oxon, England..
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    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
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    Univ Sussex, Dept Phys & Astron, Brighton, E Sussex, England..
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    Univ Penn, Dept Phys, Philadelphia, PA 19104 USA..
    Delgado, A.
    Lab Instrumentacao & Fis Expt Particulas LIP, Lisbon, Portugal.;Univ Lisbon, Fac Ciencias, Lisbon, Portugal. Univ Coimbra, Dept Phys, Coimbra, Portugal. Univ Lisbon, Ctr Fis Nucl, Lisbon, Portugal. Univ Minho, Dept Fis, Braga, Portugal. Univ Granada, Dept Fis Teor & Cosmos, Granada, Spain. Univ Granada, CAFPE, Granada, Spain. Univ Nova Lisboa, Dep Fis, Caparica, Portugal. Univ Nova Lisboa, CEFITEC, Fac Ciencias & Tecnol, Caparica, Portugal..
    Dell'Asta, L.
    Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA..
    Dell'Orso, M.
    Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy.;Univ Pisa, Dipartimento Fis E Fermi, Pisa, Italy..
    Della Pietra, M.
    Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy.;Univ Napoli Parthenope, Naples, Italy..
    Della Volpe, D.
    Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy.;Univ Naples Federico II, Dipartimento Fis, Naples, Italy..
    Demers, S.
    Yale Univ, Dept Phys, New Haven, CT USA..
    Demirkoz, B.
    Univ Autonoma Barcelona, Inst Fis Altes Energies, Barcelona, Spain.;Univ Autonoma Barcelona, Dept Fis, Barcelona, Spain..
    Deviveiros, P. O.
    Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.;Univ Amsterdam, Amsterdam, Netherlands..
    Di Ciaccio, A.
    Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy.;Univ Roma Tor Vergata, Dipartimento Fis, Rome, Italy..
    Di Mattia, A.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Di Simone, A.
    Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy.;Univ Roma Tor Vergata, Dipartimento Fis, Rome, Italy..
    Diaz, M. A.
    Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile..
    Dietzsch, T. A.
    Dinut, F.
    Dionisi, C.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.;Sapienza Univ Roma, Dipartimento Fis, Rome, Italy..
    Dobinson, R.
    CERN, Geneva, Switzerland..
    Dobson, E.
    CERN, Geneva, Switzerland..
    Dobson, M.
    CERN, Geneva, Switzerland..
    dos Anjos, A.
    Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA..
    Dova, M. T.
    Univ Nacl La Plata, Inst Fis La Plata, La Plata, Buenos Aires, Argentina.;Consejo Nacl Invest Cient & Tecn, La Plata, Buenos Aires, Argentina..
    Drake, G.
    Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA..
    Dufour, M.
    McGill Univ, Dept Phys, Montreal, PQ, Canada..
    Dumitru, I
    Univ Politecn Bucharest, Bucharest, Romania. West Univ Timisoara, Timisoara, Romania.;CERN, Geneva, Switzerland..
    Dunford, M.
    CERN, Geneva, Switzerland..
    Ebling, A.
    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
    Eckweiler, S.
    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
    Ehrenfeld, W.
    DESY, Hamburg, Germany.;DESY, Zeuthen, Germany..
    Eisenhandler, E.
    Queen Mary Univ London, Sch Phys & Astron, London, England..
    Ellis, K. , V
    Ellis, N.
    CERN, Geneva, Switzerland..
    Emeliyanov, D.
    Rutherford Appleton Lab, Particle Phys Dept, Didcot, Oxon, England..
    Enoque Ferreira de Lima, D.
    Univ Fed Rio de Janeiro, COPPE EE IF, Rio De Janeiro, Brazil..
    Ermoline, Y.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Ernst, J.
    SUNY Albany, 1400 Washington Ave, Albany, NY 12222 USA..
    Etienne, F.
    Aix Marseille Univ, CPPM, Marseille, France.;CNRS IN2P3, Marseille, France..
    Etzion, E.
    Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, Tel Aviv, Israel..
    Evangelakou, D.
    Univ Gottingen, Inst Phys 2, Gottingen, Germany..
    Falciano, S.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Farrington, S.
    Univ Oxford, Dept Phys, Oxford, England..
    Farthouat, P.
    CERN, Geneva, Switzerland..
    Faulkner, P. J. W.
    Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England..
    Fedorko, W.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Fellmann, D.
    Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA..
    Feng, E.
    Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA..
    Ferrari, R.
    Ist Nazl Fis Nucl, Sez Pavia, Pavia, Italy..
    Ferrer, M. L.
    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
    Ferretto, Parodi A.
    Ist Nazl Fis Nucl, Sez Genova, Genoa, Italy.;Univ Genoa, Dipartimento Fis, Genoa, Italy..
    Fiorini, L.
    Univ Autonoma Barcelona, Inst Fis Altes Energies, Barcelona, Spain.;Univ Autonoma Barcelona, Dept Fis, Barcelona, Spain..
    Fischer, G.
    DESY, Hamburg, Germany.;DESY, Zeuthen, Germany..
    Fonseca, Martin T.
    Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland.;Univ Bern, High Energy Phys Lab, Bern, Switzerland..
    Francis, D.
    CERN, Geneva, Switzerland..
    Fratina, S.
    Univ Penn, Dept Phys, Philadelphia, PA 19104 USA..
    French, S. T.
    Univ Cambridge, Cavendish Lab, Cambridge, England..
    Front, D.
    Weizmann Inst Sci, Dept Particle Phys, Rehovot, Israel..
    Fukunaga, C.
    Tokyo Metropolitan Univ, Grad Sch Sci & Technol, Tokyo, Japan..
    Gabaldon, Ruiz C.
    CERN, Geneva, Switzerland..
    Gadomski, S.
    Univ Geneva, Sect Phys, Geneva, Switzerland..
    Garelli, N.
    CERN, Geneva, Switzerland..
    Gee, C. N. P.
    Rutherford Appleton Lab, Particle Phys Dept, Didcot, Oxon, England..
    George, S.
    Royal Holloway Univ London, Dept Phys, Egham, Surrey, England..
    Giagu, S.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.;Sapienza Univ Roma, Dipartimento Fis, Rome, Italy..
    Giannetti, P.
    Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy.;Univ Pisa, Dipartimento Fis E Fermi, Pisa, Italy..
    Giorgi, M.
    Humboldt Univ, Dept Phys, Berlin, Germany..
    Giunta, M.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Giusti, P.
    Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy.;Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy..
    Goebel, M.
    DESY, Hamburg, Germany.;DESY, Zeuthen, Germany..
    Gomez, Fajardo L. S.
    Goncalo, R.
    Royal Holloway Univ London, Dept Phys, Egham, Surrey, England..
    Gonzalez Silva, L.
    Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina..
    Goeringer, C.
    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
    Gorini, B.
    CERN, Geneva, Switzerland..
    Gorini, E.
    Ist Nazl Fis Nucl, Sez Lecce, Lecce, Italy.;Univ Salento, Dipartimento Matemat & Fis, Lecce, Italy..
    Grabowska-Bold, I
    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
    Green, B.
    Royal Holloway Univ London, Dept Phys, Egham, Surrey, England..
    Guler, H.
    McGill Univ, Dept Phys, Montreal, PQ, Canada.;Univ Montreal, Grp Particle Phys, Montreal, PQ, Canada..
    Haas, S.
    CERN, Geneva, Switzerland..
    Haberichter, W.
    Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA..
    Hadavand, H.
    Southern Methodist Univ, Dept Phys, Dallas, TX 75275 USA..
    Hadley, D. R.
    Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England..
    Haller, J.
    Univ Gottingen, Inst Phys 2, Gottingen, Germany..
    Hamilton, A.
    Univ Geneva, Sect Phys, Geneva, Switzerland..
    Hanke, P.
    Heidelberg Univ, Kirchhoff Inst Physik, Heidelberg, Germany..
    Hansen, J. R.
    Univ Copenhagen, Niels Bohr Inst, Copenhagen, Denmark..
    Harwood, A.
    Hasegawa, S.
    Nagoya Univ, Grad Sch Sci, Nagoya, Aichi, Japan.;Nagoya Univ, Kobayashi Maskawa Inst, Nagoya, Aichi, Japan..
    Hasegawa, Y.
    Shinshu Univ, Dept Phys, Nagano, Japan..
    Hauser, R.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Hayakawa, T.
    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
    Hayden, D.
    Royal Holloway Univ London, Dept Phys, Egham, Surrey, England..
    Head, S.
    Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England..
    Heim, S.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Hellary, L.
    Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA..
    Hellman, S.
    Stockholm Univ, Dept Phys, Stockholm, Sweden.;Oskar Klein Ctr, Stockholm, Sweden..
    Henke, M.
    Hensel, C.
    Univ Gottingen, Inst Phys 2, Gottingen, Germany..
    Herrberg, R.
    Humboldt Univ, Dept Phys, Berlin, Germany..
    Hershenhorn, A.
    Techn Israel Inst Technol, Dept Phys, Haifa, Israel..
    Nakahama, Y.
    CERN, Geneva, Switzerland..
    Hillier, S. J.
    Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England..
    Hirayama, S.
    Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo, Japan.;Univ Tokyo, Dept Phys, Tokyo, Japan..
    Hod, N.
    Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, Tel Aviv, Israel..
    Hoffmann, D.
    Aix Marseille Univ, CPPM, Marseille, France.;CNRS IN2P3, Marseille, France..
    Holzbauer, J. L.
    Hong, T. M.
    Univ Penn, Dept Phys, Philadelphia, PA 19104 USA..
    Hooft, van Huysduynen L.
    NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA..
    Howarth, J.
    Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England..
    Hristova, I
    Humboldt Univ, Dept Phys, Berlin, Germany..
    Huston, J.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Igonkina, O.
    Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.;Univ Amsterdam, Amsterdam, Netherlands..
    Ikeno, M.
    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
    Ilchenko, Y.
    Ishikawa, A.
    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
    Ishino, M.
    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
    Ishitsuka, M.
    Tokyo Inst Technol, Dept Phys, Tokyo, Japan..
    Iwasaki, H.
    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
    Izzo, V
    Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy..
    Jez, P.
    Univ Copenhagen, Niels Bohr Inst, Copenhagen, Denmark..
    Ji, W.
    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
    Johansen, M.
    Johns, K.
    Univ Arizona, Dept Phys, Tucson, AZ 85721 USA..
    Jones, G.
    Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England..
    Jones, R.
    CERN, Geneva, Switzerland..
    Joos, M.
    CERN, Geneva, Switzerland..
    Kadlecik, P.
    Univ Copenhagen, Niels Bohr Inst, Copenhagen, Denmark..
    Kajomovitz, E.
    Techn Israel Inst Technol, Dept Phys, Haifa, Israel..
    Kama, S.
    Southern Methodist Univ, Dept Phys, Dallas, TX 75275 USA..
    Kanaya, N.
    Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo, Japan.;Univ Tokyo, Dept Phys, Tokyo, Japan..
    Kaneda, M.
    CERN, Geneva, Switzerland..
    Kanega, F.
    Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo, Japan.;Univ Tokyo, Dept Phys, Tokyo, Japan..
    Kanno, T.
    Tokyo Inst Technol, Dept Phys, Tokyo, Japan..
    Kapliy, A.
    Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA..
    Karamoun, A.
    Univ Alberta, Dept Phys, Edmonton, AB, Canada..
    Kasieczka, G.
    Heidelberg Univ, Inst Phys, Heidelberg, Germany..
    Kaushik, V
    Univ Arizona, Dept Phys, Tucson, AZ 85721 USA..
    Kawagoe, K.
    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
    Kawamoto, T.
    Univ Tokyo, Dept Phys, Tokyo, Japan..
    Kazarov, A.
    BP Konstantinov Petersburg Nucl Phys Inst, Natl Res Ctr, Kurchatov Inst, St Petersburg, Russia..
    Kehoe, R.
    Southern Methodist Univ, Dept Phys, Dallas, TX 75275 USA..
    Kessoku, K.
    Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo, Japan.;Univ Tokyo, Dept Phys, Tokyo, Japan..
    Khomich, A.
    Kieft, G.
    Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.;Univ Amsterdam, Amsterdam, Netherlands..
    King, M.
    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
    Kirk, J.
    Rutherford Appleton Lab, Particle Phys Dept, Didcot, Oxon, England..
    Klemetti, M.
    McGill Univ, Dept Phys, Montreal, PQ, Canada..
    Klous, S.
    Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.;Univ Amsterdam, Amsterdam, Netherlands..
    Kluge, E. -E
    Heidelberg Univ, Kirchhoff Inst Physik, Heidelberg, Germany..
    Kobayashi, D.
    Tokyo Inst Technol, Dept Phys, Tokyo, Japan..
    Kobayashi, T.
    Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo, Japan.;Univ Tokyo, Dept Phys, Tokyo, Japan..
    Koeneke, K.
    DESY, Hamburg, Germany.;DESY, Zeuthen, Germany..
    Kohn, F.
    Univ Gottingen, Inst Phys 2, Gottingen, Germany..
    Koll, J.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Kolos, S.
    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
    Kono, T.
    DESY, Hamburg, Germany.;DESY, Zeuthen, Germany.;Univ Hamburg, Inst Expt Phys, Hamburg, Germany..
    Konoplich, R.
    NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA..
    Konstantinidis, N.
    UCL, Dept Phys & Astron, London, England..
    Korcyl, K.
    Polish Acad Sci, Inst Nucl Phys, Krakow, Poland..
    Kordas, K.
    Aristotle Univ Thessaloniki, Dept Phys, Thessaloniki, Greece..
    Kotov, V
    JINR Dubna, Joint Inst Nucl Res, Dubna, Russia. Univ Cape Town, Dept Phys, Cape Town, South Africa..
    Kowalewski, R. , V
    Krasznahorkay, A.
    NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA..
    Kraus, J.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Kreiss, S.
    NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA..
    Krishnaiyengar, S.
    NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA..
    Kubota, T.
    Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo, Japan.;Univ Tokyo, Dept Phys, Tokyo, Japan..
    Kugel, A.
    Heidelberg Univ, ZITI Inst Tech Informat, Mannheim, Germany..
    Kunkle, J.
    Univ Penn, Dept Phys, Philadelphia, PA 19104 USA..
    Kurashige, H.
    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
    Kuze, M.
    Tokyo Inst Technol, Dept Phys, Tokyo, Japan..
    Kwee, R.
    Humboldt Univ, Dept Phys, Berlin, Germany..
    Laforge, B.
    UPMC, Lab Phys Nucl & Hautes Energies, Paris, France.;Univ Paris Diderot, Paris, France.;CNRS IN2P3, Paris, France..
    Lambourne, L.
    UCL, Dept Phys & Astron, London, England..
    Landon, M.
    Queen Mary Univ London, Sch Phys & Astron, London, England..
    Lane, J. L.
    Lang, V. S.
    Heidelberg Univ, Kirchhoff Inst Physik, Heidelberg, Germany..
    Lankford, A. J.
    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
    Lanza, A.
    Ist Nazl Fis Nucl, Sez Pavia, Pavia, Italy..
    Laranjeira, Lima S. M.
    CERN, Geneva, Switzerland..
    Larner, A.
    Univ Oxford, Dept Phys, Oxford, England..
    Lehmann, Miotto G.
    CERN, Geneva, Switzerland..
    Lei, X.
    Univ Arizona, Dept Phys, Tucson, AZ 85721 USA..
    Lellouch, D.
    Weizmann Inst Sci, Dept Particle Phys, Rehovot, Israel..
    Leonidopoulos, C.
    Univ Edinburgh, Sch Phys & Astron, SUPA, Edinburgh, Midlothian, Scotland..
    Lepold, F.
    Levinson, L.
    Weizmann Inst Sci, Dept Particle Phys, Rehovot, Israel..
    Lewis, G. H.
    Liberali, V
    Ist Nazl Fis Nucl, Sez Milano, Milan, Italy.;Univ Milan, Dipartimento Fis, Milan, Italy..
    Linnemann, J. T.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Lipeles, E.
    Univ Penn, Dept Phys, Philadelphia, PA 19104 USA..
    Lo, Sterzo F.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.;Sapienza Univ Roma, Dipartimento Fis, Rome, Italy..
    Lohse, T.
    Humboldt Univ, Dept Phys, Berlin, Germany..
    Long, A.
    Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA..
    Losada, M.
    Univ Antonio Narino, Ctr Invest, Bogota, Colombia..
    Loureiro, K. F.
    Luci, C.
    Fed Univ Juiz De Fora UFJF, Elect Circuits Dept, Rio De Janeiro, Brazil. Fed Univ Sao Joao dell Rei UFSJ, Sao Joao Del Rei, Brazil. Univ Sao Paulo, Inst Fis, Sao Paulo, Brazil.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Luminari, L.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Lundberg, J.
    Lupu, N.
    Techn Israel Inst Technol, Dept Phys, Haifa, Israel..
    Macey, T.
    Queen Mary Univ London, Sch Phys & Astron, London, England..
    Machado Miguens, J.
    Univ Lisbon, Fac Ciencias, Lisbon, Portugal. Univ Coimbra, Dept Phys, Coimbra, Portugal. Univ Lisbon, Ctr Fis Nucl, Lisbon, Portugal. Univ Minho, Dept Fis, Braga, Portugal. Univ Granada, Dept Fis Teor & Cosmos, Granada, Spain. Univ Granada, CAFPE, Granada, Spain. Univ Nova Lisboa, Dep Fis, Caparica, Portugal. Univ Nova Lisboa, CEFITEC, Fac Ciencias & Tecnol, Caparica, Portugal..
    Mackeprang, R.
    Univ Copenhagen, Niels Bohr Inst, Copenhagen, Denmark..
    Maeno, T.
    Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA..
    Maettig, S.
    DESY, Hamburg, Germany.;DESY, Zeuthen, Germany.;Univ Hamburg, Inst Expt Phys, Hamburg, Germany..
    Magnoni, L.
    CERN, Geneva, Switzerland..
    Mahlstedt, J.
    Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.;Univ Amsterdam, Amsterdam, Netherlands..
    Maiani, C.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.;Sapienza Univ Roma, Dipartimento Fis, Rome, Italy..
    Maltrana, D.
    Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile..
    Mangeard, P. -S
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Mann, A.
    Univ Gottingen, Inst Phys 2, Gottingen, Germany..
    Maenner, R.
    Heidelberg Univ, ZITI Inst Tech Informat, Mannheim, Germany..
    Mapelli, L.
    CERN, Geneva, Switzerland..
    Marino, C.
    Indiana Univ, Dept Phys, Bloomington, IN 47405 USA..
    Martin, B.
    CERN, Geneva, Switzerland..
    Martin, B. T.
    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
    Martin, T.
    Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England..
    Martin, V
    Univ Edinburgh, Sch Phys & Astron, SUPA, Edinburgh, Midlothian, Scotland..
    Martin-Haugh, S.
    Univ Sussex, Dept Phys & Astron, Brighton, E Sussex, England..
    Martyniuk, A.
    Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England..
    Marx, M.
    Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England..
    Marzano, F.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Masik, J.
    Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England..
    Mastrandrea, P.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Matsushita, T.
    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
    McCarn, A.
    Univ Illinois, Dept Phys, 1110 W Green St, Urbana, IL 61801 USA..
    Medinnis, M.
    DESY, Hamburg, Germany.;DESY, Zeuthen, Germany..
    Meier, K.
    Heidelberg Univ, Kirchhoff Inst Physik, Heidelberg, Germany..
    Melachrinos, C.
    Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA..
    Mendoza, Nava L. M.
    Univ Antonio Narino, Ctr Invest, Bogota, Colombia..
    Meoni, E.
    Univ Autonoma Barcelona, Inst Fis Altes Energies, Barcelona, Spain.;Univ Autonoma Barcelona, Dept Fis, Barcelona, Spain..
    Mermod, P.
    Univ Oxford, Dept Phys, Oxford, England..
    Merola, L.
    Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy.;Univ Naples Federico II, Dipartimento Fis, Naples, Italy..
    Meroni, C.
    Ist Nazl Fis Nucl, Sez Milano, Milan, Italy..
    Messina, A.
    CERN, Geneva, Switzerland.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Mete, A. S.
    Meyer, C. P.
    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
    Middleton, R. P.
    Rutherford Appleton Lab, Particle Phys Dept, Didcot, Oxon, England..
    Mikenberg, G.
    Weizmann Inst Sci, Dept Particle Phys, Rehovot, Israel..
    Miller, D. W.
    Mills, C. M.
    Mincer, A.
    NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA..
    Mineev, M.
    JINR Dubna, Joint Inst Nucl Res, Dubna, Russia. Univ Cape Town, Dept Phys, Cape Town, South Africa..
    Misiejuk, A.
    Royal Holloway Univ London, Dept Phys, Egham, Surrey, England..
    Moa, T.
    Moenig, K.
    DESY, Hamburg, Germany.;DESY, Zeuthen, Germany..
    Monk, J.
    UCL, Dept Phys & Astron, London, England..
    Monticelli, F.
    Univ Nacl La Plata, Inst Fis La Plata, La Plata, Buenos Aires, Argentina.;Consejo Nacl Invest Cient & Tecn, La Plata, Buenos Aires, Argentina..
    Moore, R. W.
    Mora, Herrera C.
    Univ Geneva, Sect Phys, Geneva, Switzerland..
    Morel, J.
    Univ Gottingen, Inst Phys 2, Gottingen, Germany..
    Morettini, P.
    Ist Nazl Fis Nucl, Sez Genova, Genoa, Italy..
    Moritz, S.
    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
    Mornacchi, G.
    CERN, Geneva, Switzerland..
    Morris, J. D.
    Queen Mary Univ London, Sch Phys & Astron, London, England..
    Mueller, F.
    Mueller, T.
    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
    Munwes, Y.
    Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, Tel Aviv, Israel..
    Murillo, Garcia R.
    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
    Musto, E.
    Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy.;Univ Naples Federico II, Dipartimento Fis, Naples, Italy..
    Nagano, K.
    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
    Nagasaka, Y.
    Hiroshima Inst Technol, Fac Appl Informat Sci, Hiroshima, Japan..
    Narayan, R.
    Navarro, G. A.
    Univ Antonio Narino, Ctr Invest, Bogota, Colombia..
    Negri, A.
    Ist Nazl Fis Nucl, Sez Pavia, Pavia, Italy.;Univ Pavia, Dipartimento Fis, Pavia, Italy..
    Nelson, S.
    SLAC Natl Accelerator Lab, Stanford, CA USA..
    Nemethy, P.
    NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA..
    Neubauer, M. S.
    Univ Illinois, Dept Phys, 1110 W Green St, Urbana, IL 61801 USA..
    Neusiedl, A.
    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
    Neves, R.
    Newman, P.
    Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England..
    Nikiforov, A.
    Humboldt Univ, Dept Phys, Berlin, Germany..
    Nisati, A.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
    Nobe, T.
    Tokyo Inst Technol, Dept Phys, Tokyo, Japan..
    Nomoto, H.
    Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo, Japan.;Univ Tokyo, Dept Phys, Tokyo, Japan..
    Nozaki, M.
    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
    Nurse, E.
    UCL, Dept Phys & Astron, London, England..
    Ochi, A.
    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
    Oda, S.
    Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo, Japan.;Univ Tokyo, Dept Phys, Tokyo, Japan..
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    Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England..
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    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
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    Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo, Japan.;Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
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    Nagoya Univ, Grad Sch Sci, Nagoya, Aichi, Japan.;Nagoya Univ, Kobayashi Maskawa Inst, Nagoya, Aichi, Japan..
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    Univ Penn, Dept Phys, Philadelphia, PA 19104 USA..
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    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
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    Ist Nazl Fis Nucl, Sez Genova, Genoa, Italy..
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    Shinshu Univ, Dept Phys, Nagano, Japan..
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    Univ Penn, Dept Phys, Philadelphia, PA 19104 USA..
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    Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England..
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    Bogazici Univ, Dept Phys, Istanbul, Turkey. Dogus Univ, Dept Phys, Istanbul, Turkey. Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey..
    Ozone, K.
    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
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    Univ Autonoma Barcelona, Inst Fis Altes Energies, Barcelona, Spain.;Univ Autonoma Barcelona, Dept Fis, Barcelona, Spain..
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    Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile..
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    Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA..
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    Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA..
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    Ist Nazl Fis Nucl, Sez Genova, Genoa, Italy.;Univ Genoa, Dipartimento Fis, Genoa, Italy..
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    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
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    Royal Holloway Univ London, Dept Phys, Egham, Surrey, England..
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    CERN, Geneva, Switzerland..
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    Rutherford Appleton Lab, Particle Phys Dept, Didcot, Oxon, England..
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    DESY, Hamburg, Germany.;DESY, Zeuthen, Germany..
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    Univ Autonoma Barcelona, Inst Fis Altes Energies, Barcelona, Spain.;Univ Autonoma Barcelona, Dept Fis, Barcelona, Spain..
    Petcu, M.
    Petersen, B. A.
    CERN, Geneva, Switzerland..
    Petersen, J.
    CERN, Geneva, Switzerland..
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    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
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    Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia..
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    Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina..
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    Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy.;Univ Pisa, Dipartimento Fis E Fermi, Pisa, Italy..
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    Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England..
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    Univ Oxford, Dept Phys, Oxford, England..
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    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
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    UCL, Dept Phys & Astron, London, England..
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    Ist Nazl Fis Nucl, Sez Lecce, Lecce, Italy..
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    Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile..
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    Univ Oregon, Ctr High Energy Phys, Eugene, OR 97403 USA..
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    Rutherford Appleton Lab, Particle Phys Dept, Didcot, Oxon, England..
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    Univ Gottingen, Inst Phys 2, Gottingen, Germany..
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    Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile..
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    Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA..
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    Southern Methodist Univ, Dept Phys, Dallas, TX 75275 USA..
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    Univ Oregon, Ctr High Energy Phys, Eugene, OR 97403 USA..
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    Southern Methodist Univ, Dept Phys, Dallas, TX 75275 USA..
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    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
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    Univ Autonoma Barcelona, Inst Fis Altes Energies, Barcelona, Spain.;Univ Autonoma Barcelona, Dept Fis, Barcelona, Spain..
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    McGill Univ, Dept Phys, Montreal, PQ, Canada.;Inst Particle Phys, Victoria, BC, Canada..
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    Univ Oregon, Ctr High Energy Phys, Eugene, OR 97403 USA..
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    Weizmann Inst Sci, Dept Particle Phys, Rehovot, Israel..
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    Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy.;Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy..
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    Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina..
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    Univ Sussex, Dept Phys & Astron, Brighton, E Sussex, England..
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    Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy.;Univ Naples Federico II, Dipartimento Fis, Naples, Italy..
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    Iowa State Univ, Dept Phys & Astron, Ames, IA USA..
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    BP Konstantinov Petersburg Nucl Phys Inst, Natl Res Ctr, Kurchatov Inst, St Petersburg, Russia..
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    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
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    Univ Sydney, Sch Phys, Sydney, NSW, Australia..
    Sacco, I
    Safai, Tehrani F.
    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
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    Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo, Japan.;Univ Tokyo, Dept Phys, Tokyo, Japan..
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    Queen Mary Univ London, Sch Phys & Astron, London, England..
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    Saland, J.
    SUNY Albany, 1400 Washington Ave, Albany, NY 12222 USA..
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    SLAC Natl Accelerator Lab, Stanford, CA USA..
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    Ist Nazl Fis Nucl, Grp Collegato Cosenza, IT-87036 Arcavacata Di Rende, Italy.;Univ Calabria, Dipartimento Fis, IT-87036 Arcavacata Di Rende, Italy..
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    Univ Sussex, Dept Phys & Astron, Brighton, E Sussex, England..
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    Univ Antonio Narino, Ctr Invest, Bogota, Colombia..
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    Rutherford Appleton Lab, Particle Phys Dept, Didcot, Oxon, England..
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    McGill Univ, Dept Phys, Montreal, PQ, Canada..
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    Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy.;Univ Roma Tor Vergata, Dipartimento Fis, Rome, Italy..
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    Univ Sussex, Dept Phys & Astron, Brighton, E Sussex, England..
    Sargedas De Sousa, M.
    Lab Instrumentacao & Fis Expt Particulas LIP, Lisbon, Portugal.;Univ Lisbon, Fac Ciencias, Lisbon, Portugal. Univ Coimbra, Dept Phys, Coimbra, Portugal. Univ Lisbon, Ctr Fis Nucl, Lisbon, Portugal. Univ Minho, Dept Fis, Braga, Portugal. Univ Granada, Dept Fis Teor & Cosmos, Granada, Spain. Univ Granada, CAFPE, Granada, Spain. Univ Nova Lisboa, Dep Fis, Caparica, Portugal. Univ Nova Lisboa, CEFITEC, Fac Ciencias & Tecnol, Caparica, Portugal..
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    Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA..
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    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
    Savu, D.
    CERN, Geneva, Switzerland..
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    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
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    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany.;Univ Penn, Dept Phys, Philadelphia, PA 19104 USA..
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    Scheirich, D.
    Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA..
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    Ist Nazl Fis Nucl, Sez Genova, Genoa, Italy.;Univ Genoa, Dipartimento Fis, Genoa, Italy..
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    Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA..
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    CERN, Geneva, Switzerland..
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    Heidelberg Univ, Kirchhoff Inst Physik, Heidelberg, Germany..
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    Heidelberg Univ, Inst Phys, Heidelberg, Germany..
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    Heidelberg Univ, Inst Phys, Heidelberg, Germany..
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    Ist Nazl Fis Nucl, Sez Milano, Milan, Italy.;Univ Milan, Dipartimento Fis, Milan, Italy..
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    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
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    Heidelberg Univ, ZITI Inst Tech Informat, Mannheim, Germany..
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    Heidelberg Univ, Kirchhoff Inst Physik, Heidelberg, Germany..
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    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
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    Southern Methodist Univ, Dept Phys, Dallas, TX 75275 USA..
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    CERN, Geneva, Switzerland..
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    Univ Oregon, Ctr High Energy Phys, Eugene, OR 97403 USA..
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    Yale Univ, Dept Phys, New Haven, CT USA..
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    Tokyo Inst Technol, Dept Phys, Tokyo, Japan..
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    Nagasaki Inst Appl Sci, Nagasaki, Japan..
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    Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA..
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    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
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    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.;Sapienza Univ Roma, Dipartimento Fis, Rome, Italy..
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    Weizmann Inst Sci, Dept Particle Phys, Rehovot, Israel..
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    Stockholm Univ, Dept Phys, Stockholm, Sweden..
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    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
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    Univ Oregon, Ctr High Energy Phys, Eugene, OR 97403 USA..
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    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
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    Moscow MV Lomonosov State Univ, DV Skobeltsyn Inst Nucl Phys, Moscow, Russia..
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    Univ Oslo, Dept Phys, Oslo, Norway..
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    Stockholm Univ, Dept Phys, Stockholm, Sweden.;Oskar Klein Ctr, Stockholm, Sweden..
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    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
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    Harvard Univ, Lab Particle Phys & Cosmol, Cambridge, MA 02138 USA..
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    Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, Tel Aviv, Israel..
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    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
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    Ist Nazl Fis Nucl, Sez Lecce, Lecce, Italy.;Univ Salento, Dipartimento Matemat & Fis, Lecce, Italy..
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    CERN, Geneva, Switzerland..
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    Ist Nazl Fis Nucl, Sez Milano, Milan, Italy..
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    Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England..
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    Heidelberg Univ, Kirchhoff Inst Physik, Heidelberg, Germany..
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    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
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    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
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    McGill Univ, Dept Phys, Montreal, PQ, Canada..
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    McGill Univ, Dept Phys, Montreal, PQ, Canada..
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    SLAC Natl Accelerator Lab, Stanford, CA USA..
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    Univ Oregon, Ctr High Energy Phys, Eugene, OR 97403 USA..
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    Royal Holloway Univ London, Dept Phys, Egham, Surrey, England..
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    SLAC Natl Accelerator Lab, Stanford, CA USA..
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    Univ Alberta, Dept Phys, Edmonton, AB, Canada..
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    Osaka Univ, Grad Sch Sci, Osaka, Japan..
    Sugimoto, T.
    Nagoya Univ, Grad Sch Sci, Nagoya, Aichi, Japan.;Nagoya Univ, Kobayashi Maskawa Inst, Nagoya, Aichi, Japan..
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    Univ Sheffield, Dept Phys & Astron, Hounsfield Rd, Sheffield S3 7RH, S Yorkshire, England.;Univ Sussex, Dept Phys & Astron, Brighton, E Sussex, England..
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    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
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    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
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    Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, Tel Aviv, Israel..
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    Nagoya Univ, Grad Sch Sci, Nagoya, Aichi, Japan.;Nagoya Univ, Kobayashi Maskawa Inst, Nagoya, Aichi, Japan..
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    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
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    Shinshu Univ, Dept Phys, Nagano, Japan..
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    Louisiana Tech Univ, Ruston, LA 71270 USA..
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    Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England..
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    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
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    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
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    Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany..
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    Techn Israel Inst Technol, Dept Phys, Haifa, Israel..
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    Techn Israel Inst Technol, Dept Phys, Haifa, Israel..
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    UCL, Dept Phys & Astron, London, England..
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    Royal Holloway Univ London, Dept Phys, Egham, Surrey, England..
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    Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England..
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    Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England..
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    Univ Cambridge, Cavendish Lab, Cambridge, England..
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    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
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    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
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    Nagoya Univ, Grad Sch Sci, Nagoya, Aichi, Japan.;Nagoya Univ, Kobayashi Maskawa Inst, Nagoya, Aichi, Japan..
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    Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA USA.;Univ Calif Berkeley, Berkeley, CA 94720 USA..
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    Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland.;Univ Bern, High Energy Phys Lab, Bern, Switzerland..
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    Univ Oregon, Ctr High Energy Phys, Eugene, OR 97403 USA..
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    UPMC, Lab Phys Nucl & Hautes Energies, Paris, France.;Univ Paris Diderot, Paris, France.;CNRS IN2P3, Paris, France..
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    Queen Mary Univ London, Sch Phys & Astron, London, England..
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    CERN, Geneva, Switzerland..
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    CERN, Geneva, Switzerland..
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    Univ Nacl La Plata, Inst Fis La Plata, La Plata, Buenos Aires, Argentina.;Consejo Nacl Invest Cient & Tecn, La Plata, Buenos Aires, Argentina..
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    Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA..
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    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
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    Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.;Univ Amsterdam, Amsterdam, Netherlands..
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    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
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    Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA..
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    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
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    CERN, Geneva, Switzerland..
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    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy..
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    Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland.;Univ Bern, High Energy Phys Lab, Bern, Switzerland..
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    Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy..
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    Univ Penn, Dept Phys, Philadelphia, PA 19104 USA..
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    McGill Univ, Dept Phys, Montreal, PQ, Canada..
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    McGill Univ, Dept Phys, Montreal, PQ, Canada..
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    Univ Oxford, Dept Phys, Oxford, England..
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    CERN, Geneva, Switzerland..
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    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
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    Heidelberg Univ, Kirchhoff Inst Physik, Heidelberg, Germany..
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    Univ Cambridge, Cavendish Lab, Cambridge, England..
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    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
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    Rutherford Appleton Lab, Particle Phys Dept, Didcot, Oxon, England..
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    Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA..
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    Rutherford Appleton Lab, Particle Phys Dept, Didcot, Oxon, England..
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    UCL, Dept Phys & Astron, London, England..
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    CERN, Geneva, Switzerland..
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    McGill Univ, Dept Phys, Montreal, PQ, Canada..
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    Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA..
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    Univ Geneva, Sect Phys, Geneva, Switzerland..
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    Univ Edinburgh, Sch Phys & Astron, SUPA, Edinburgh, Midlothian, Scotland..
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    Univ Copenhagen, Niels Bohr Inst, Copenhagen, Denmark..
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    JINR Dubna, Joint Inst Nucl Res, Dubna, Russia. Univ Cape Town, Dept Phys, Cape Town, South Africa..
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    Kobe Univ, Grad Sch Sci, Kobe, Hyogo, Japan..
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    Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England..
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    UPMC, Lab Phys Nucl & Hautes Energies, Paris, France.;Univ Paris Diderot, Paris, France.;CNRS IN2P3, Paris, France..
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    KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan..
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    UPMC, Lab Phys Nucl & Hautes Energies, Paris, France.;Univ Paris Diderot, Paris, France.;CNRS IN2P3, Paris, France..
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    NRC KI, State Res Ctr Inst High Energy Phys Protvino, Protvino, Russia..
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    Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.;Sapienza Univ Roma, Dipartimento Fis, Rome, Italy..
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    Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA..
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    Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA..
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    NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA..
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    Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA..
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    Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA..
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    Humboldt Univ, Dept Phys, Berlin, Germany..
    The ATLAS Data Acquisition and High Level Trigger system2016In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 11, article id P06008Article in journal (Refereed)
    Abstract [en]

    This paper describes the data acquisition and high level trigger system of the ATLAS experiment at the Large Hadron Collider at CERN, as deployed during Run 1. Data flow as well as control, configuration and monitoring aspects are addressed. An overview of the functionality of the system and of its performance is presented and design choices are discussed.

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    Sez INFN Cagliari, Cagliari, Italy..
    Calcaterra, A.
    INFN Frascati, Lab Nazl, Frascati, Italy..
    Campanelli, M.
    UCL, London, England..
    Chauveau, J.
    Univ Paris Diderot, CNRS, IN2P3, LPNHE,Univ Pierre & Marie Curie, Paris, France..
    Chepurnov, A.
    MSU, SINP, Moscow, Russia..
    Chernyavsky, M.
    PN Lebedev Phys Inst LPI, Moscow, Russia..
    Choi, K. -Y
    Chumakov, A.
    Univ Tecn Federico Santa Maria, Valparaiso, Chile.;Ctr Cient Tecnol Valparaiso, Valparaiso, Chile..
    Ciambrone, P.
    INFN Frascati, Lab Nazl, Frascati, Italy..
    Dallavalle, G. M.
    Sez INFN Bologna, Bologna, Italy..
    D'Ambrosio, N.
    Sez INFN Napoli, Naples, Italy.;INFN Gran Sasso, Lab Nazl, Laquila, Italy..
    D'Appollonio, G.
    Sez INFN Cagliari, Cagliari, Italy.;Univ Bologna, Bologna, Italy..
    De Lellis, G.
    Sez INFN Napoli, Naples, Italy.;Univ Napoli Federico II, Naples, Italy..
    De Roeck, A.
    European Org Nucl Res CERN, Geneva, Switzerland..
    De Serio, M.
    Sez INFN Bari, Bari, Italy.;Univ Cagliari, Cagliari, Italy..
    Dedenko, L.
    MSU, SINP, Moscow, Russia..
    Di Crescenzo, A.
    Sez INFN Napoli, Naples, Italy.;Univ Bari, Bari, Italy..
    Di Marco, N.
    INFN Gran Sasso, Lab Nazl, Laquila, Italy..
    Dib, C.
    Univ Tecn Federico Santa Maria, Valparaiso, Chile.;Ctr Cient Tecnol Valparaiso, Valparaiso, Chile..
    Dijkstra, H.
    European Org Nucl Res CERN, Geneva, Switzerland..
    Dmitrenko, V.
    Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Domenici, D.
    INFN Frascati, Lab Nazl, Frascati, Italy..
    Donskov, S.
    NRC Kurchatov Inst, IHEP, Protvino, Russia..
    Dubreuil, A.
    Univ Geneva, Geneva, Switzerland..
    Ebert, J.
    Univ Hamburg, Hamburg, Germany..
    Enik, T.
    Joint Inst Nucl Res, Dubna, Russia..
    Etenko, A.
    Kurchatov Inst, Natl Res Ctr, Moscow, Russia..
    Fabbri, F.
    Sez INFN Bologna, Bologna, Italy..
    Fabbri, L.
    Sez INFN Bologna, Bologna, Italy.;Univ Napoli Federico II, Naples, Italy..
    Fedin, O.
    NRC Kurchatov Inst, PNPI, Gatchina, Russia..
    Fedorova, G.
    MSU, SINP, Moscow, Russia..
    Felici, G.
    INFN Frascati, Lab Nazl, Frascati, Italy..
    Ferro-Luzzi, M.
    European Org Nucl Res CERN, Geneva, Switzerland..
    Fini, R. A.
    Sez INFN Bari, Bari, Italy..
    Fonte, P.
    Univ Coimbra, LIP, Coimbra, Portugal..
    Franco, C.
    Univ Coimbra, LIP, Coimbra, Portugal..
    Fukuda, T.
    Nagoya Univ, Nagoya, Aichi, Japan..
    Galati, G.
    Sez INFN Napoli, Naples, Italy.;Univ Napoli Federico II, Naples, Italy..
    Gavrilov, G.
    NRC Kurchatov Inst, IHEP, Protvino, Russia..
    Gerlach, S.
    Humboldt Univ, Berlin, Germany..
    Golinka-Bezshyyko, L.
    Taras Shevchenko Natl Univ Kyiv, Kiev, Ukraine..
    Golubkov, D.
    NRC Kurchatov Inst, ITEP, Moscow, Russia..
    Golutvin, A.
    Imperial Coll London, London, England..
    Gorbunov, D.
    RAS, INR, Moscow, Russia..
    Gorbunov, S.
    PN Lebedev Phys Inst LPI, Moscow, Russia..
    Gorkavenko, V.
    Taras Shevchenko Natl Univ Kyiv, Kiev, Ukraine..
    Gornushkin, Y.
    Joint Inst Nucl Res, Dubna, Russia..
    Gorshenkov, M.
    Natl Univ Sci & Technol MISiS, Moscow, Russia..
    Grachev, V.
    Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Graverini, E.
    Univ Zurich, Phys Inst, Zurich, Switzerland..
    Grichine, V.
    PN Lebedev Phys Inst LPI, Moscow, Russia..
    Guler, A. M.
    METU, Ankara, Turkey..
    Guz, Yu.
    NRC Kurchatov Inst, IHEP, Protvino, Russia..
    Hagner, C.
    Univ Hamburg, Hamburg, Germany..
    Hakobyan, H.
    Univ Tecn Federico Santa Maria, Valparaiso, Chile.;Ctr Cient Tecnol Valparaiso, Valparaiso, Chile..
    van Herwijnen, E.
    European Org Nucl Res CERN, Geneva, Switzerland..
    Hollnagel, A.
    Univ Hamburg, Hamburg, Germany..
    Hosseini, B.
    Sez INFN Cagliari, Cagliari, Italy..
    Hushchyn, M.
    Yandex Sch Data Anal, Moscow, Russia..
    Iaselli, G.
    Sez INFN Bari, Bari, Italy.;Univ Cagliari, Cagliari, Italy..
    Iuliano, A.
    Sez INFN Napoli, Naples, Italy.;Univ Bari, Bari, Italy..
    Jacobsson, R.
    European Org Nucl Res CERN, Geneva, Switzerland..
    Jonker, M.
    European Org Nucl Res CERN, Geneva, Switzerland..
    Kadenko, I.
    Taras Shevchenko Natl Univ Kyiv, Kiev, Ukraine..
    Kamiscioglu, C.
    Ankara Univ, Ankara, Turkey..
    Kamiscioglu, M.
    METU, Ankara, Turkey..
    Khabibullin, M.
    RAS, INR, Moscow, Russia..
    Khaustov, G.
    NRC Kurchatov Inst, IHEP, Protvino, Russia..
    Khotyantsev, A.
    RAS, INR, Moscow, Russia..
    Kim, S. H.
    Gyeongsang Natl Univ, Jinju, South Korea..
    Kim, V.
    NRC Kurchatov Inst, PNPI, Gatchina, Russia.;St Petersburg Polytech Univ SPbPU, St Petersburg, Russia..
    Kim, Y. G.
    Gwangju Natl Univ Educ, Gwangju, South Korea..
    Kitagawa, N.
    Nagoya Univ, Nagoya, Aichi, Japan..
    Ko, J. -W
    Kodama, K.
    Aichi Univ Educ, Kariya, Aichi, Japan..
    Kolesnikov, A.
    Joint Inst Nucl Res, Dubna, Russia..
    Kolev, D. I.
    Sofia Univ, Fac Phys, Sofia, Bulgaria..
    Kolosov, V.
    NRC Kurchatov Inst, IHEP, Protvino, Russia..
    Komatsu, M.
    Nagoya Univ, Nagoya, Aichi, Japan..
    Konovalova, N.
    PN Lebedev Phys Inst LPI, Moscow, Russia..
    Korkmaz, M. A.
    METU, Ankara, Turkey..
    Korol, I.
    Humboldt Univ, Berlin, Germany..
    Korol'ko, I.
    NRC Kurchatov Inst, ITEP, Moscow, Russia..
    Korzenev, A.
    Univ Geneva, Geneva, Switzerland..
    Kovalenko, S.
    Univ Tecn Federico Santa Maria, Valparaiso, Chile.;Ctr Cient Tecnol Valparaiso, Valparaiso, Chile..
    Krasilnikova, I.
    Natl Univ Sci & Technol MISiS, Moscow, Russia..
    Krivova, K.
    Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Kudenko, Y.
    RAS, INR, Moscow, Russia.;Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Kurochka, V.
    RAS, INR, Moscow, Russia..
    Kuznetsova, E.
    NRC Kurchatov Inst, PNPI, Gatchina, Russia..
    Lacker, H. M.
    Humboldt Univ, Berlin, Germany..
    Lai, A.
    Sez INFN Cagliari, Cagliari, Italy..
    Lanfranchi, G.
    INFN Frascati, Lab Nazl, Frascati, Italy..
    Lantwin, O.
    Imperial Coll London, London, England..
    Lauria, A.
    Sez INFN Napoli, Naples, Italy.;Univ Bari, Bari, Italy..
    Lebbolo, H.
    Univ Paris Diderot, CNRS, IN2P3, LPNHE,Univ Pierre & Marie Curie, Paris, France..
    Lee, K. Y.
    Gyeongsang Natl Univ, Jinju, South Korea..
    Levy, J. -M
    Lopes, L.
    Univ Coimbra, LIP, Coimbra, Portugal..
    Lyubovitskij, V.
    Univ Tecn Federico Santa Maria, Valparaiso, Chile.;Ctr Cient Tecnol Valparaiso, Valparaiso, Chile..
    Maalmi, J.
    Univ Paris Sud 11, CNRS, IN2P3, LAL, Orsay, France..
    Magnan, A.
    Imperial Coll London, London, England..
    Maleev, V.
    NRC Kurchatov Inst, PNPI, Gatchina, Russia..
    Malinin, A.
    Kurchatov Inst, Natl Res Ctr, Moscow, Russia..
    Mefodev, A.
    RAS, INR, Moscow, Russia..
    Mermod, P.
    Univ Geneva, Geneva, Switzerland..
    Mikado, S.
    Nihon Univ, Coll Ind Technol, Narashino, Chiba, Japan..
    Mikhaylov, Yu.
    NRC Kurchatov Inst, IHEP, Protvino, Russia..
    Milstead, D. A.
    Stockholm Univ, Stockholm, Sweden..
    Mineev, O.
    RAS, INR, Moscow, Russia..
    Montanari, A.
    Sez INFN Bologna, Bologna, Italy..
    Montesi, M. C.
    Sez INFN Napoli, Naples, Italy.;Univ Bari, Bari, Italy..
    Morishima, K.
    Nagoya Univ, Nagoya, Aichi, Japan..
    Movchan, S.
    Joint Inst Nucl Res, Dubna, Russia..
    Naganawa, N.
    Nagoya Univ, Nagoya, Aichi, Japan..
    Nakamura, M.
    Nagoya Univ, Nagoya, Aichi, Japan..
    Nakano, T.
    Nagoya Univ, Nagoya, Aichi, Japan..
    Novikov, A.
    Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Obinyakov, B.
    Kurchatov Inst, Natl Res Ctr, Moscow, Russia..
    Ogawa, S.
    Toho Univ, Funabashi, Chiba, Japan..
    Okateva, N.
    PN Lebedev Phys Inst LPI, Moscow, Russia..
    Owen, P. H.
    Univ Zurich, Phys Inst, Zurich, Switzerland..
    Paoloni, A.
    INFN Frascati, Lab Nazl, Frascati, Italy..
    Park, B. D.
    Gyeongsang Natl Univ, Jinju, South Korea..
    Paparella, L.
    Sez INFN Bari, Bari, Italy..
    Pastore, A.
    Sez INFN Bari, Bari, Italy.;Univ Cagliari, Cagliari, Italy..
    Patel, M.
    Imperial Coll London, London, England..
    Pereyma, D.
    NRC Kurchatov Inst, ITEP, Moscow, Russia..
    Petrenko, D.
    Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Petridis, K.
    Univ Bristol, HH Wills Phys Lab, Bristol, Avon, England..
    Podgrudkov, D.
    MSU, SINP, Moscow, Russia..
    Poliakov, V.
    NRC Kurchatov Inst, IHEP, Protvino, Russia..
    Polukhina, N.
    PN Lebedev Phys Inst LPI, Moscow, Russia.;Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Prokudin, M.
    NRC Kurchatov Inst, ITEP, Moscow, Russia..
    Prota, A.
    Sez INFN Napoli, Naples, Italy.;Univ Bari, Bari, Italy..
    Rademakers, A.
    European Org Nucl Res CERN, Geneva, Switzerland..
    Ratnikov, F.
    Yandex Sch Data Anal, Moscow, Russia..
    Rawlings, T.
    STFC Rutherford Appleton Lab, Didcot, Oxon, England..
    Razeti, M.
    Sez INFN Cagliari, Cagliari, Italy..
    Redi, F.
    Imperial Coll London, London, England..
    Ricciardi, S.
    STFC Rutherford Appleton Lab, Didcot, Oxon, England..
    Roganova, T.
    MSU, SINP, Moscow, Russia..
    Rogozhnikov, A.
    Yandex Sch Data Anal, Moscow, Russia..
    Rokujo, H.
    Nagoya Univ, Nagoya, Aichi, Japan..
    Rosa, G.
    Sez INFN Napoli, Naples, Italy..
    Rovelli, T.
    Sez INFN Bologna, Bologna, Italy.;Univ Napoli Federico II, Naples, Italy..
    Ruchayskiy, O.
    Univ Copenhagen, Niels Bohr Inst, Copenhagen, Denmark..
    Ruf, T.
    European Org Nucl Res CERN, Geneva, Switzerland..
    Samoylenko, V.
    NRC Kurchatov Inst, IHEP, Protvino, Russia..
    Saputi, A.
    INFN Frascati, Lab Nazl, Frascati, Italy..
    Sato, O.
    Nagoya Univ, Nagoya, Aichi, Japan..
    Savchenko, E. S.
    Natl Univ Sci & Technol MISiS, Moscow, Russia..
    Schmidt-Parzefall, W.
    Univ Hamburg, Hamburg, Germany..
    Serra, N.
    Univ Zurich, Phys Inst, Zurich, Switzerland..
    Shakin, A.
    Natl Univ Sci & Technol MISiS, Moscow, Russia..
    Shaposhnikov, M.
    Ecole Polytech Fed Lausanne, Lausanne, Switzerland..
    Shatalov, P.
    NRC Kurchatov Inst, ITEP, Moscow, Russia..
    Shchedrina, T.
    PN Lebedev Phys Inst LPI, Moscow, Russia..
    Shchutska, L.
    Taras Shevchenko Natl Univ Kyiv, Kiev, Ukraine..
    Shevchenko, V.
    Kurchatov Inst, Natl Res Ctr, Moscow, Russia..
    Shibuya, H.
    Toho Univ, Funabashi, Chiba, Japan..
    Shustov, A.
    Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Silverstein, S. B.
    Stockholm Univ, Stockholm, Sweden..
    Simone, S.
    Sez INFN Bari, Bari, Italy.;Univ Cagliari, Cagliari, Italy..
    Skorokhvatov, M.
    Kurchatov Inst, Natl Res Ctr, Moscow, Russia.;Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Smirnov, S.
    Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Sohn, J. Y.
    Gyeongsang Natl Univ, Jinju, South Korea..
    Sokolenko, A.
    Taras Shevchenko Natl Univ Kyiv, Kiev, Ukraine..
    Starkov, N.
    PN Lebedev Phys Inst LPI, Moscow, Russia..
    Storaci, B.
    Univ Zurich, Phys Inst, Zurich, Switzerland..
    Strolin, P.
    Sez INFN Napoli, Naples, Italy.;Univ Bari, Bari, Italy..
    Takahashi, S.
    Kobe Univ, Kobe, Hyogo, Japan..
    Timiryasov, I.
    Ecole Polytech Fed Lausanne, Lausanne, Switzerland..
    Tioukov, V.
    Sez INFN Napoli, Naples, Italy..
    Tosi, N.
    Sez INFN Bologna, Bologna, Italy..
    Treille, D.
    European Org Nucl Res CERN, Geneva, Switzerland..
    Tsenov, R.
    Sofia Univ, Fac Phys, Sofia, Bulgaria.;Joint Inst Nucl Res, Dubna, Russia..
    Ulin, S.
    Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Ustyuzhanin, A.
    Yandex Sch Data Anal, Moscow, Russia..
    Uteshev, Z.
    Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Vankova-Kirilova, G.
    Sofia Univ, Fac Phys, Sofia, Bulgaria..
    Vannucci, F.
    Univ Paris Diderot, CNRS, IN2P3, LPNHE,Univ Pierre & Marie Curie, Paris, France..
    Venkova, P.
    Sofia Univ, Fac Phys, Sofia, Bulgaria..
    Vilchinski, S.
    Taras Shevchenko Natl Univ Kyiv, Kiev, Ukraine..
    Villa, M.
    Sez INFN Bologna, Bologna, Italy.;Univ Napoli Federico II, Naples, Italy..
    Vlasik, K.
    Natl Res Nucl Univ MEPhI, Moscow, Russia..
    Volkov, A.
    PN Lebedev Phys Inst LPI, Moscow, Russia..
    Voronkov, R.
    PN Lebedev Phys Inst LPI, Moscow, Russia..
    Wanke, R.
    Johannes Gutenberg Univ Mainz, Mainz, Germany..
    Woo, J. -K
    Wurm, M.
    Johannes Gutenberg Univ Mainz, Mainz, Germany..
    Xella, S.
    Univ Copenhagen, Niels Bohr Inst, Copenhagen, Denmark..
    Yilmaz, D.
    Ankara Univ, Ankara, Turkey..
    Yilmazer, A. U.
    Ankara Univ, Ankara, Turkey..
    Yoon, C. S.
    Gyeongsang Natl Univ, Jinju, South Korea..
    Zaytsev, Yu.
    NRC Kurchatov Inst, ITEP, Moscow, Russia..
    The active muon shield in the SHiP experiment2017In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 12, article id P05011Article in journal (Refereed)
    Abstract [en]

    The SHiP experiment is designed to search for very weakly interacting particles beyond the Standard Model which are produced in a 400 GeV/c proton beam dump at the CERN SPS. An essential task for the experiment is to keep the Standard Model background level to less than 0.1 event after 2 x 10(20) protons on target. In the beam dump, around 10(11) muons will be produced per second. The muon rate in the spectrometer has to be reduced by at least four orders of magnitude to avoid muon-induced combinatorial background. A novel active muon shield is used to magnetically deflect the muons out of the acceptance of the spectrometer. This paper describes the basic principle of such a shield, its optimization and its performance.

  • 19.
    Antonova, M.
    et al.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia.;Moscow Engn Phys Inst, Kashirskoe Shosse 31, Moscow, Russia..
    Asfandiyarov, R.
    Univ Geneva, DPNC, Quai Ernest Ansermet 24, Geneva, Switzerland..
    Bayes, R.
    Univ Glasgow, Sch Phys & Astron, Kelvin Bldg, Glasgow, Lanark, Scotland..
    Benoit, P.
    CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland..
    Blondel, A.
    Univ Geneva, DPNC, Quai Ernest Ansermet 24, Geneva, Switzerland..
    Bogomilov, M.
    Univ Sofia, Dept Phys, James Bourchier Blvd 5, Sofia, Bulgaria..
    Bross, A.
    Fermilab Natl Accelerator Lab, Kirk Rd & Pine St, Batavia, IL 60510 USA..
    Cadoux, F.
    Univ Geneva, DPNC, Quai Ernest Ansermet 24, Geneva, Switzerland..
    Cervera, A.
    CSIC, IFIC, Calle Catedrat Jose Beltran 2, Valencia, Spain.;Univ Valencia, Calle Catedrat Jose Beltran 2, Valencia, Spain..
    Chikuma, N.
    Univ Tokyo, Int Ctr Elementary Particle Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo, Japan..
    Dudarev, A.
    CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland..
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, FREIA.
    Favre, Y.
    Univ Geneva, DPNC, Quai Ernest Ansermet 24, Geneva, Switzerland..
    Fedotov, S.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Hallsjo, S-P
    Izmaylov, A.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Karadzhov, Y.
    Univ Geneva, DPNC, Quai Ernest Ansermet 24, Geneva, Switzerland..
    Khabibullin, M.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Khotyantsev, A.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Kleymenova, A.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Koga, T.
    Univ Tokyo, Int Ctr Elementary Particle Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo, Japan..
    Kostin, A.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Kudenko, Y.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia.;Moscow Inst Phys & Technol, 9 Inst Skiy Per, Dolgoprudnyi, Moscow Region, Russia.;Moscow Engn Phys Inst, Kashirskoe Shosse 31, Moscow, Russia..
    Likhacheva, V.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Martinez, B.
    Univ Geneva, DPNC, Quai Ernest Ansermet 24, Geneva, Switzerland..
    Matev, R.
    Univ Sofia, Dept Phys, James Bourchier Blvd 5, Sofia, Bulgaria..
    Medvedeva, M.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Mefodiev, A.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia.;Moscow Inst Phys & Technol, 9 Inst Skiy Per, Dolgoprudnyi, Moscow Region, Russia..
    Minamino, A.
    Yokohama Natl Univ, 79-8 Tokiwadai, Yokohama, Kanagawa, Japan..
    Mineev, O.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Nessi, M.
    CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland..
    Nicola, L.
    Univ Geneva, DPNC, Quai Ernest Ansermet 24, Geneva, Switzerland..
    Noah, E.
    Univ Geneva, DPNC, Quai Ernest Ansermet 24, Geneva, Switzerland..
    Ovsiannikova, T.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Da Silva, H. Pais
    CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland..
    Parsa, S.
    Univ Geneva, DPNC, Quai Ernest Ansermet 24, Geneva, Switzerland..
    Rayner, M.
    CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland..
    Rolando, G.
    CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland..
    Shaykhiev, A.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Simion, Patrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, FREIA.
    Soler, F. J. P.
    Univ Glasgow, Sch Phys & Astron, Kelvin Bldg, Glasgow, Lanark, Scotland..
    Suvorov, S.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Tsenov, R.
    Univ Sofia, Dept Phys, James Bourchier Blvd 5, Sofia, Bulgaria..
    Ten Kate, H.
    CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland..
    Vankova-Kirilova, G.
    Univ Sofia, Dept Phys, James Bourchier Blvd 5, Sofia, Bulgaria..
    Yershov, N.
    Russian Acad Sci, Inst Nucl Res, 60 October Revolution Pr 7a, Moscow, Russia..
    Baby MIND: a magnetized segmented neutrino detector for the WAGASCI experiment2017In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 12, article id C07028Article in journal (Refereed)
    Abstract [en]

    T2K (Tokai-to-Kamioka) is a long-baseline neutrino experiment in Japan designed to study various parameters of neutrino oscillations. Anear detector complex (ND280) is located 280m downstream of the production target and measures neutrino beam parameters before any oscillations occur. ND280's measurements are used to predict the number and spectra of neutrinos in the Super-Kamiokande detector at the distance of 295 km. The difference in the target material between the far (water) and near (scintillator, hydrocarbon) detectors leads to the main non-cancelling systematic uncertainty for the oscillation analysis. In order to reduce this uncertainty a new WAter-Grid-And-SCintillator detector (WAGASCI) has been developed. A magnetized iron neutrino detector (Baby MIND) will be used to measure momentum and charge identification of the outgoing muons from charged current interactions. The Baby MIND modules are composed of magnetized iron plates and long plastic scintillator bars read out at the both ends with wavelength shifting fibers and silicon photomultipliers. The front-end electronics board has been developed to perform the readout and digitization of the signals from the scintillator bars. Detector elements were tested with cosmic rays and in the PS beam at CERN. The obtained results are presented in this paper.

  • 20. Bates, R. L.
    et al.
    Bell, P. J.
    Bernabeu, J.
    Bizzell, J.
    Bohm, J.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    de Renstrom, P. A. Bruckman
    Catinaccio, A.
    Cindro, V.
    Ciocio, A.
    Civera, J. V.
    Chouridou, S.
    Dervan, P.
    Dick, B.
    Dolezal, Z.
    Eklund, L.
    Feld, L.
    Ferrere, D.
    Gadomski, S.
    Gonzalez, F.
    Gornicki, E.
    Greenhall, A.
    Grillo, A. A.
    Grosse-Knetter, J.
    Gruwe, M.
    Haywood, S.
    Hessey, N. P.
    Ikegami, Y.
    Jones, T. J.
    Kaplon, J.
    Kodys, P.
    Kohriki, T.
    Kondo, T.
    Koperny, S.
    Lacasta, C.
    Lozano Bahilo, J.
    Malecki, P.
    Martinez-McKinney, F.
    McMahon, S. J.
    McPherson, A.
    Mikulec, B.
    Mikuz, M.
    Moorhead, G. F.
    Morrissey, M. C.
    Nagai, K.
    Nichols, A.
    O'Shea, V.
    Pater, J. R.
    Peeters, S. J. M.
    Pernegger, H.
    Perrin, E.
    Phillips, P. W.
    Pieron, J. P.
    Roe, S.
    Sanchez, J.
    Spencer, E.
    Stastny, J.
    Tarrant, J.
    Terada, S.
    Tyndel, M.
    Unno, Y.
    Wallny, R.
    Weber, M.
    Weidberg, A. R.
    Wells, P. S.
    Werneke, P.
    Wilmut, I.
    The ATLAS SCT grounding and shielding concept and implementation2012In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 7, p. P03005-Article in journal (Refereed)
    Abstract [en]

    This paper describes the design and implementation of the grounding and shielding system for the ATLAS SemiConductor Tracker (SCT). The mitigation of electromagnetic interference and noise pickup through power lines is the critical design goal as they have the potential to jeopardize the electrical performance. We accomplish this by adhering to the ATLAS grounding rules, by avoiding ground loops and isolating the different subdetectors. Noise sources are identified and design rules to protect the SCT against them are described. A rigorous implementation of the design was crucial to achieve the required performance. This paper highlights the location, connection and assembly of the different components that affect the grounding and shielding system: cables, filters, cooling pipes, shielding enclosure, power supplies and others. Special care is taken with the electrical properties of materials and joints. The monitoring of the grounding system during the installation period is also discussed. Finally, after connecting more than four thousand SCT modules to all of their services, electrical, mechanical and thermal within the wider ATLAS experimental environment, dedicated tests show that noise pickup is minimised.

  • 21. Branchini, P.
    et al.
    Budano, A.
    Balla, A.
    Beretta, M.
    Ciambrone, P.
    De Lucia, E.
    D'Uffizi, A.
    Marciniewski, Pawel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Front-end DAQ strategy and implementation for the KLOE-2 experiment2013In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 8, p. T04004-Article in journal (Refereed)
    Abstract [en]

    A new front-end data acquisition (DAQ) system has been conceived for the data collection of the new detectors which will be installed by the KLOE2 collaboration. This system consists of a general purpose FPGA based DAQ module and a VME board hosting up to 16 optical links. The DAQ module has been built around a Virtex-4 FPGA and it is able to acquire up to 1024 different channels distributed over 16 front-end slave cards. Each module is a general interface board (GIB) which performs also first level data concentration tasks. The GIB has an optical interface, a RS-232, an USB and a Gigabit Ethernet Interface. The optical interface will be used for DAQ purposes while the Gigabit Ethernet interface for monitoring tasks and debug. Two new detectors exploit this strategy to collect data. Optical links are used to deliver data to the VME board which performs data concentration tasks. The return optical link from the board to the GIB is used to initialize the front-end cards. The VME interface of the module implements the VME 2eSST protocol in order to sustain a peak data rate of up to 320 MB/s. At the moment the system is working at the Frascati National Laboratory (LNF).

  • 22.
    Branger, Erik
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Grape, Sophie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Jacobsson, Staffan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Jansson, Peter
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Andersson Sundén, Erik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Comparison of prediction models for Cherenkov light emissions from nuclear fuel assemblies2017In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 12, article id P06007Article in journal (Refereed)
    Abstract [en]

    The Digital Cherenkov Viewing Device (DCVD) is a tool used by nuclear safeguards inspectors to verify irradiated nuclear fuel assemblies in wet storage based on the Cherenkov light produced by the assembly. Verification that no rods have been substituted in the fuel, so-called partial-defect verification, is made by comparing the intensity measured with a DCVD with a predicted intensity, based on operator fuel declaration. The prediction model currently used by inspectors is based on simulations of Cherenkov light production in a BWR 8x8 geometry. This work investigates prediction models based on simulated Cherenkov light production in a BWR 8x8 and a PWR 17x17 assembly, as well as a simplified model based on a single rod in water. Cherenkov light caused by both fission product gamma and beta decays were considered.The simulations reveal that there are systematic differences between the models, most noticeably with respect to the fuel assembly cooling time. Consequently, a prediction model that is based on another fuel assembly configuration than the fuel type being measured, will result in systematic over or underestimation of short-cooled fuel as opposed to long-cooled fuel. While a simplified model may be accurate enough for fuel assemblies with fairly homogeneous cooling times, the prediction models may differ by up to 18 \,\% for more heterogeneous fuel. Accordingly, these investigations indicate that the currently used model may need to be exchanged with a set of more detailed, fuel-type specific models, in order minimize the model dependant systematic deviations.

  • 23.
    Branger, Erik
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Grape, Sophie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Jacobsson, Staffan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Jansson, Peter
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Andersson Sundén, Erik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    On Cherenkov light production by irradiated nuclear fuel rods2017In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 12, article id T06001Article in journal (Refereed)
    Abstract [en]

    Safeguards verification of irradiated nuclear fuel assemblies in wet storage is frequently done by measuring the Cherenkov light in the surrounding water produced due to radioactive decays of fission products in the fuel. This paper accounts for the physical processes behind the Cherenkov light production caused by a single fuel rod in wet storage, and simulations are presented that investigate to what extent various properties of the rod affect the Cherenkov light production. The results show that the fuel properties has a noticeable effect on the Cherenkov light production, and thus that the prediction models for Cherenkov light production which are used in the safeguards verifications could potentially be improved by considering these properties.It is concluded that the dominating source of the Cherenkov light is gamma-ray interactions with electrons in the surrounding water. Electrons created from beta decay may also exit the fuel and produce Cherenkov light, and e.g. Y-90 was identified as a possible contributor to significant levels of the measurable Cherenkov light in long-cooled fuel. The results also show that the cylindrical, elongated fuel rod geometry results in a non-isotropic Cherenkov light production, and the light component parallel to the rod's axis exhibits a dependence on gamma-ray energy that differs from the total intensity, which is of importance since the typical safeguards measurement situation observes the vertical light component. It is also concluded that the radial distributions of the radiation sources in a fuel rod will affect the Cherenkov light production.

  • 24.
    Branger, Erik
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Grape, Sophie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Jansson, Peter
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Jacobsson Svärd, Staffan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Experimental evaluation of models for predicting Cherenkov light intensities from short-cooled nuclear fuel assemblies2018In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 13, article id P02022Article in journal (Refereed)
    Abstract [en]

    The Digital Cherenkov Viewing Device (DCVD) is a tool used by nuclear safeguards inspectors to verify irradiated nuclear fuel assemblies in wet storage based on the recording of Cherenkov light produced by the assemblies. One type of verification involves comparing the measured light intensity from an assembly with a predicted intensity, based on assembly declarations. Crucial for such analyses is the performance of the prediction model used, and recently new modelling methods have been introduced to allow for enhanced prediction capabilities by taking the irradiation history into account, and by including the cross-talk radiation from neighbouring assemblies in the predictions.

    In this work, the performance of three models for Cherenkov-light intensity prediction is evaluated by applying them to a set of short-cooled PWR 17x17 assemblies for which experimental DCVD measurements and operator-declared irradiation data was available; (1) a two-parameter model, based on total burnup and cooling time, previously used by the safeguards inspectors, (2) a newly introduced gamma-spectrum-based model, which incorporates cycle-wise burnup histories, and (3) the latter gamma-spectrum-based model with the addition to account for contributions from neighbouring assemblies.

    The results show that the two gamma-spectrum-based models provide significantly higher precision for the measured inventory compared to the two-parameter model, lowering the standard deviation between relative measured and predicted intensities from 15.2% to 8.1% respectively 7.8%.

    The results show some systematic differences between assemblies of different designs (produced by different manufacturers) in spite of their similar PWR 17x17 geometries, and possible ways are discussed to address such differences, which may allow for even higher prediction capabilities. Still, it is concluded that the gamma-spectrum-based models enable confident verification of the fuel assembly inventory at the currently used detection limit for partial defects, being a 30% discrepancy between measured and predicted intensities, while some false detection occurs with the two-parameter model. The results also indicate that the gamma-spectrum-based prediction methods are accurate enough that the 30% discrepancy limit could potentially be lowered.

    The full text will be freely available from 2019-03-01 15:24
  • 25.
    Branger, Erik
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Grape, Sophie
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Jansson, Peter
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Jacobsson Svärd, Staffan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Experimental study of background subtraction in Digital Cherenkov Viewing Device measurements2018In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221Article in journal (Refereed)
    Abstract [en]

    The Digital Cherenkov Viewing Device (DCVD) is an imaging tool used by authority inspectors for partial defect verification of nuclear fuel assemblies in wet storage, i.e. to verify that part of an assembly has not been diverted. One of the currently adopted verification procedures is based on quantitative measurements of the assembly's Cherenkov light emissions, and comparisons to an expected intensity, calculated based on operator declarations. A background subtraction of the intensity data in the recorded images is necessary for accurate quantitative measurements. The currently used background subtraction is aimed at removing an electronics-induced image-wide offset, but it is argued here that the currently adopted procedure may be insufficient.

    It is recommended that a standard dark-frame subtraction should be used, to remove systematic pixel-wise background due to the electronics, replacing the currently used offset procedure. Experimental analyses show that a dark-frame subtraction would further enhance the accuracy and reliability of DCVD measurements. Furthermore, should ageing of the CCD chip result in larger systematic pixel-wise deviations over time, a dark-frame subtraction can ensure reliable measurements regardless of the age of the CCD chip. It can also help in eliminating any adverse effects of malfunctioning pixels. In addition to the background from electronic noise, ways to compensate for background from neighbouring fuel assemblies and ambient light are also discussed.

  • 26. Cazzaniga, C.
    et al.
    Tardocchi, M.
    Croci, G.
    Frost, C.
    Giacomelli, L.
    Grosso, G.
    Hjalmarsson, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Rebai, M.
    Rhodes, N. J.
    Schooneveld, E. M.
    Gorini, G.
    First measurement of the VESUVIO neutron spectrum in the 30-80 MeV energy range using a Proton Recoil Telescope technique2013In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 8, p. P11008-Article in journal (Refereed)
    Abstract [en]

    Measurements of the fast neutron energy spectrum at the ISIS spallation source are reported. The measurements were performed with a Proton Recoil Telescope consisting of a thin plastic foil placed in the neutron beam and two scintillator detectors. Results in the neutron energy range 30 MeV < E-n < 80 MeV are in good agreement with Monte Carlo simulations of the neutron spectrum.

  • 27. Dabrowski, A. E.
    et al.
    Bettoni, S.
    Bravin, E.
    Corsini, R.
    Doebert, S.
    Lefevre, T.
    Rabiller, A.
    Soby, L.
    Skowronski, P. K.
    Tecker, F.
    Egger, D.
    Ferrari, Arnaud
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Welsch, C. P.
    Measuring the bunch frequency multiplication at the 3rd CLIC Test Facility2012In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 7, p. P01005-Article in journal (Refereed)
    Abstract [en]

    The CLIC Test Facility 3 (CTF3) is being built and commissioned by an international collaboration to test the feasibility of the proposed Compact Linear Collider (CLIC) drive beam generation scheme. Central to this scheme is the use of RF deflectors to inject bunches into a delay loop and a combiner ring, in order to transform the initial bunch frequency of 1.5 GHz from the linac to a final bunch frequency of 12 GHz. To do so, the machine's transverse optics must be tuned to ensure beam isochronicity and each ring's length can finally be adjusted with wiggler magnets to a sub millimeter path length accuracy. Diagnostics based on optical streak camera and RF power measurements, in particular frequency bands, have been designed to measure the longitudinal behaviour of the beam during the combination. This paper presents the diagnostics and recent commissioning measurements.

  • 28. Diez, S.
    et al.
    Haber, C. H.
    Witharm, R.
    Affolder, A. A.
    Allport, P. P.
    Anghinolfi, F.
    Bates, R.
    Beck, G.
    Benitez, V.
    Bernabeu, J.
    Blanchot, G.
    Bloch, I.
    Blue, A.
    Booker, P.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Buttar, C.
    Casse, G.
    Carroll, J.
    Church, I.
    Civera, J. V.
    Dervan, P.
    Fadeyev, V.
    Farthouat, P.
    Ferrere, D.
    Friedrich, C.
    French, R.
    Gallop, B.
    Garcia, C.
    Garcia-Argos, C.
    Gibson, M.
    Gonzalez-Sevilla, S.
    Greenall, A.
    Gregor, I. M.
    Grillo, A.
    Hauser, M.
    Haywood, S.
    Hennes, E.
    Hessey, N. P.
    Hill, J.
    Hommels, L. B. A.
    Jones, T.
    Kaplon, J.
    Kuehn, S.
    Lacasta, C.
    Lynn, D.
    Mahboubi, K.
    Marco, R.
    Marti-Garcia, S.
    Martinez-McKinney, F.
    Matheson, J.
    McMahon, S.
    Nelson, D.
    Newcomer, F. M.
    Nickerson, R.
    Parzefall, U.
    Phillips, P.
    Sadrozinski, H. F. -W
    Santoyo, D.
    Seiden, A.
    Soldevila, U.
    Spencer, E.
    Stanitzki, M.
    Sutcliffe, P.
    Tipton, P.
    Tsurin, I.
    Ullan, M.
    Unno, Y.
    Viehauser, G.
    Villani, E. G.
    Warren, M.
    Wastie, R.
    Weidberg, A.
    Wilmut, I.
    Wonsak, S.
    Wormald, M.
    A double-sided, shield-less stave prototype for the ATLAS Upgrade strip tracker for the High Luminosity LHC2014In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, p. P03012-Article in journal (Refereed)
    Abstract [en]

    A detailed description of the integration structures for the barrel region of the silicon strips tracker of the ATLAS Phase-II upgrade for the upgrade of the Large Hadron Collider, the so-called High Luminosity LHC (HL-LHC), is presented. This paper focuses on one of the latest demonstrator prototypes recently assembled, with numerous unique features. It consists of a shortened, shield-less, and double sided stave, with two candidate power distributions implemented. Thermal and electrical performances of the prototype are presented, as well as a description of the assembly procedures and tools.

  • 29. Föhl, K
    et al.
    Düren, M
    Koch, P
    Zühlsdorf, M
    Adlarson, Patrik
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Calén, Hans
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Fransson, Kjell
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Gullström, Carl-Oscar
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Hejkenskjöld, Lena
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Höistad, Bo
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Jacewicz, Marek
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Johansson, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Kupsc, Andrzej
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Leupold, Stefan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Marciniewski, Pawel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Redmer, Christoph
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Wolke, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Zlomanczuk, Jozef
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    The WASA focussing light guide disc DIRC2012In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 7, p. C01002-Article in journal (Refereed)
    Abstract [en]

    Two Disc DIRC prototypes have been designed and built and are shortly being tested with proton test beams. Different in design details, both aim to provide the WASA-at-COSY experiment with a particle velocity measurement that improves the missing mass resolution. This paper shows the difference in concept between these two designs and also compares to designs that have been proposed for PANDA.

  • 30. Gonzalez-Sevilla, S.
    et al.
    Affolder, A. A.
    Allport, P. P.
    Anghinolfi, F.
    Barbier, G.
    Bates, R.
    Beck, G.
    Benitez, V.
    Bernabeu, J.
    Blanchot, G.
    Bloch, I.
    Blue, A.
    Booker, P.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Buttar, C.
    Cadoux, F.
    Casse, G.
    Carroll, J.
    Church, I.
    Civera, J. V.
    Clark, A.
    Dervan, P.
    Diez, S.
    Endo, M.
    Fadeyev, V.
    Farthouat, P.
    Favre, Y.
    Ferrere, D.
    Friedrich, C.
    French, R.
    Gallop, B.
    Garcia, C.
    Gibson, M.
    Greenall, A.
    Gregor, I.
    Grillo, A.
    Haber, C. H.
    Hanagaki, K.
    Hara, K.
    Hauser, M.
    Haywood, S.
    Hessey, N.
    Hill, J.
    Hommels, L. B. A.
    Iacobucci, G.
    Ikegami, Y.
    Jones, T.
    Kaplon, J.
    Kuehn, S.
    Lacasta, C.
    La Marra, D.
    Lynn, D.
    Mahboubin, K.
    Marco, R.
    Marti-Garcia, S.
    Martinez-McKinney, F.
    Matheson, J.
    McMahon, S.
    Nelson, D.
    Newcomer, F. M.
    Parzefall, U.
    Phillips, P. W.
    Sadrozinski, H. F-W
    Santoyo, D.
    Seiden, A.
    Soldevila, U.
    Spencer, E.
    Stanitzki, M.
    Sutcliffe, P.
    Takubo, Y.
    Terada, S.
    Tipton, P.
    Tsurin, I.
    Ullan, M.
    Unno, Y.
    Villani, E. G.
    Warren, M.
    Weber, M.
    Wilmut, I.
    Wonsak, S.
    Witharm, R.
    Wormald, M.
    A double-sided silicon micro-strip Super-Module for the ATLAS Inner Detector upgrade in the High-Luminosity LHC2014In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, p. P02003-Article in journal (Refereed)
    Abstract [en]

    The ATLAS experiment is a general purpose detector aiming to fully exploit the discovery potential of the Large Hadron Collider (LHC) at CERN. It is foreseen that after several years of successful data-taking, the LHC physics programme will be extended in the so-called High-Luminosity LHC, where the instantaneous luminosity will be increased up to 5 x 10(34) cm(-2) s(-1). For ATLAS, an upgrade scenario will imply the complete replacement of its internal tracker, as the existing detector will not provide the required performance due to the cumulated radiation damage and the increase in the detector occupancy. The current baseline layout for the new ATLAS tracker is an all-silicon-based detector, with pixel sensors in the inner layers and silicon micro-strip detectors at intermediate and outer radii. The super-module is an integration concept proposed for the strip region of the future ATLAS tracker, where double-sided stereo silicon micro-strip modules are assembled into a low-mass local support structure. An electrical super-module prototype for eight double-sided strip modules has been constructed. The aim is to exercise the multi-module readout chain and to investigate the noise performance of such a system. In this paper, the main components of the current super-module prototype are described and its electrical performance is presented in detail.

  • 31.
    Gradin, J.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy. Univ Grenoble Alpes, LPSC, 53 Ave Martyrs, F-38026 Grenoble, France.
    Mårtensson, Mikael
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Comparison of two hardware-based hit filtering methods for trackers in high-pileup environments2018In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 13, article id P04019Article in journal (Refereed)
    Abstract [en]

    As experiments in high energy physics aim to measure increasingly rare processes, the experiments continually strive to increase the expected signal yields. In the case of the High Luminosity upgrade of the LHC, the luminosity is raised by increasing the number of simultaneous proton-proton interactions, so-called pileup. This increases the expected yields of signal and background processes alike. The signal is embedded in a large background of processes that mimic that of signal events. It is therefore imperative for the experiments to develop new triggering methods to effectively distinguish the interesting events from the background.& para;& para;We present a comparison of two methods for filtering detector hits to be used for triggering on particle tracks: one based on a pattern matching technique using Associative Memory (AM) chips and the other based on the Hough transform. Their efficiency and hit rejection are evaluated for proton-proton collisions with varying amounts of pileup using a simulation of a generic silicon tracking detector. It is found that, while both methods are feasible options for a track trigger with single muon efficiencies around 98-99%, the AM based pattern matching produces a lower number of hit combinations with respect to the Hough transform whilst keeping more of the true signal hits. We also present the effect on the two methods of increasing the amount of support material in the detector and of introducing inefficiencies by deactivating detector modules. The increased support material has negligable effects on the efficiency for both methods, while dropping 5% (10%) of the available modules decreases the efficiency to about 95% (87%) for both methods, irrespective of the amount of pileup.

  • 32.
    Gradin, Joakim
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Mikael, Mårtensson
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Comparison of two hardware-based hit filtering methods inhigh-pileup environments2017In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221Article in journal (Other academic)
  • 33.
    Hobein, Matthias
    et al.
    Stockholms universitet, Fysikum.
    Orban, Istvan
    Stockholms universitet, Fysikum.
    Böhm, Stefanie
    Stockholms universitet, Fysikum.
    Solders, Andreas
    Stockholms universitet, Fysikum.
    Suhonen, Markus
    Stockholms universitet, Fysikum.
    Fritioff, T.
    Stockholms universitet, Fysikum.
    Tashenov, Stanislav
    Stockholms universitet, Fysikum.
    Schuch, Reinhold
    Stockholms universitet, Fysikum.
    Optimization of the Stockholm R-EBIT for the production and extraction of highly charged ions2010In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 5, no C11003Article in journal (Refereed)
    Abstract [en]

    We describe a refrigerated EBIT (R-EBIT) commissioned at the AlbaNova Research Center at Stockholm University. As an innovative solution, the superconducting magnet and the trapping drift tubes of the R-EBIT are cooled to a temperature of 4 K by a set of two cooling heads connected to helium compressors. This dry, i.e. liquid helium and liquid nitrogen free, system is easily operated and creates highly charged ions at a fraction of the cost of traditional liquid-cooled systems. A pulsed and continuous gas injection system was developed to feed neutral particles into the electron beam in the trap region. This improves significantly the highly charged ion production and R-EBIT performance. Fast extraction of ions from the R-EBIT yields very short ( < 100 ns), charge-separated ion bunches which can be either analysed using a straight time-of-flight section or sent to experimental beam lines following selection in a bending magnet. An emittance meter was used to measure the emittance of the ions extracted from the R-EBIT. The extracted ions were also re-trapped in a cylindrical Penning trap and properties of the re-trapped ions have been measured using the emittance meter. Results of these measurements are reported in this publication.

  • 34.
    Koch, L.
    et al.
    Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany..
    Denig, A.
    Johannes Gutenberg Univ Mainz, Inst Nucl Phys, Johann Joachim Becher Weg 45, D-55128 Mainz, Germany..
    Drexler, P.
    Johannes Gutenberg Univ Mainz, Inst Nucl Phys, Johann Joachim Becher Weg 45, D-55128 Mainz, Germany..
    Garillon, B.
    Johannes Gutenberg Univ Mainz, Inst Nucl Phys, Johann Joachim Becher Weg 45, D-55128 Mainz, Germany..
    Johansson, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Kühn, W.
    Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany..
    Lange, S.
    Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany..
    Lauth, W.
    Johannes Gutenberg Univ Mainz, Inst Nucl Phys, Johann Joachim Becher Weg 45, D-55128 Mainz, Germany..
    Liang, Y.
    Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany..
    Marcinievski, Pawel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Rathmann, T.
    Johannes Gutenberg Univ Mainz, Inst Nucl Phys, Johann Joachim Becher Weg 45, D-55128 Mainz, Germany..
    Redmer, C.
    Johannes Gutenberg Univ Mainz, Inst Nucl Phys, Johann Joachim Becher Weg 45, D-55128 Mainz, Germany..
    The Crystal Zero Degree Detector at BESIII2017In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 12, article id C07001Article in journal (Refereed)
    Abstract [en]

    The BESIII experiment at the BEPCII electron positron collider at IHEP (Beijing) is collecting data in the charm-tau mass region. Electron positron collisions are a very well suited environment for the study of initial state radiation (ISR). However, the photons from ISR are strongly peaked towards small polar angles and are currently detected with limited efficiency. In order to increase the detection efficiency of ISR photons, we are developing small-size calorimeters to be placed in the very forward and backward regions. Each detector will consist of two 4 x 3 arrays of 1 x 1 x 14 cm(3) LYSO crystals. A 1 cm gap separating each of the two arrays will reduce the contamination from background at very low angles. The scintillation light will be collected by silicon photomultipliers (SiPMs). The expected event rate in the MHz range requires flash ADCs recording the preamplified SiPM outputs. The digitized waveforms will be analyzed in realtime yielding data reduction and pile-up detection. This high bandwidth data stream will be transmitted via optical fibers to FPGA-based hardware performing sub-event building, buffering, and event correlation with the BESIII trigger. The sub-events with a corresponding trigger will be sent to the BESIII event builder via TCP/IP. A single crystal equipped with a SiPM was instrumented as a prototype detector. Tests with radioactive sources were performed successfully.

  • 35.
    Ozsahin, D. Uzun
    et al.
    Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, 55 Fruit St, Boston, MA 02115 USA.;Near East Univ, TRNC, Dept Biomed Engn, Near East Blvd, CY-99138 Nicosia, Cyprus..
    Bläckberg, Lisa
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory. Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, 55 Fruit St, Boston, MA 02115 USA.
    El Fakhri, G.
    Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, 55 Fruit St, Boston, MA 02115 USA..
    Sabet, H.
    Harvard Med Sch, Massachusetts Gen Hosp, Dept Radiol, 55 Fruit St, Boston, MA 02115 USA..
    GATE simulation of a new design of pinhole SPECT system for small animal brain imaging2017In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 12, article id C01085Article in journal (Refereed)
    Abstract [en]

    Small animal SPECT imaging has gained an increased interest over the past decade since it is an excellent tool for developing new drugs and tracers. Therefore, there is a huge effort on the development of cost-effective SPECT detectors with high capabilities. The aim of this study is to simulate the performance characteristics of new designs for a cost effective, stationary SPECT system dedicated to small animal imaging with a focus on mice brain. The conceptual design of this SPECT system platform, Stationary Small Animal SSA-SPECT, is to use many pixelated CsI:TI detector modules with 0.4 mm x 0.4 mm pixels in order to achieve excellent intrinsic detector resolution where each module is backed by a single pinhole collimator with 0.3 mm hole diameter. In this work, we present the simulation results of four variations of the SSA-SPECT platform where the number of detector modules and FOV size is varied while keeping the detector size and collimator hole size constant. Using the NEMA NU-4 protocol, we performed spatial resolution, sensitivity, image quality simulations followed by a Derenzo-like phantom evaluation. The results suggest that all four SSA-SPECT systems can provide better than 0.063% system sensitivity and < 1.5 mm FWHM spatial resolution without resolution recovery or other correction techniques. Specifically, SSA-SPECT-1 showed a system sensitivity of 0.09% in combination with 1.1 mm FWHM spatial resolution.

  • 36.
    Pelikan, Daniel
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Bingefors, Nils
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Dancila, Dragos
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
    Gustafsson, Leif
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Wireless data transfer with mm-waves for future tracking detectors2014In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, p. C11008-Article in journal (Refereed)
    Abstract [en]

    Wireless data transfer has revolutionized the consumer market for the last decade generating many products equipped with transmitters and receivers for wireless data transfer. Wireless technology opens attractive possibilities for data transfer in future tracking detectors. The reduction of wires and connectors for data links is certainly beneficial both for the material budget and the reliability of the system. An advantage of wireless data transfer is the freedom of routing signals which today is particularly complicated when bringing the data the first 50 cm out of the tracker. With wireless links intelligence can be built into a tracker by introducing communication between tracking layers within a region of interest which would allow the construction of track primitives in real time. The wireless technology used in consumer products is however not suitable for tracker readouts. The low data transfer capacity of current 5 GHz transceivers and the relatively large feature sizes of the components is a disadvantage. Due to the requirement of high data rates in tracking detectors high bandwidth is required. The frequency band around 60 GHz turns out to be a very promising candidate for data transfer in a detector system. The high baseband frequency allows for data transfer in the order of several Gbit/s. Due to the small wavelength in the mm range only small structures are needed for the transmitting and receiving electronics. The 60 GHz frequency band is a strong candidate for future WLAN applications hence components are already starting to be available on the market. Patch antennas produced on flexible Printed Circuit Board substrate that can be used for wireless communication in future trackers are presented in this article. The antennas can be connected to transceivers for data transmission/reception or be connected by wave-guides to structures capable of bringing the 60 GHz signal behind boundaries. Results on simulation and fabrication of these antennas are presented as well as studies on the sensitivity of production tolerances.

  • 37.
    Rolo, M. Da Rocha
    et al.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy..
    Alexeev, M.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy..
    Amoroso, A.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy..
    Ferroli, R. Baldini
    Chinese Acad Sci, Inst High Energy Phys, 19B YuquanLu, Beijing 100049, Peoples R China.;INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy..
    Bertani, M.
    INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy..
    Bettoni, D.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy..
    Bianchi, F.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy..
    Bugalho, R.
    Lab Instrumentacao & Fis Expt Particulas LIP, Av Elias Garcia 14, P-1000149 Lisbon, Portugal..
    Calcaterra, A.
    INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy..
    Canale, N.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy..
    Capodiferro, M.
    INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy.;Univ Roma La Sapienza, INFN, Sez Roma, Ple A Moro 2, I-00185 Rome, Italy..
    Carassiti, V.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy..
    Cerioni, S.
    INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy..
    Chai, J. Y.
    Chinese Acad Sci, Inst High Energy Phys, 19B YuquanLu, Beijing 100049, Peoples R China.;INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Politecn Torino, Dipartimento Elettron & Telecomunicaz, Corso Duca Abruzzi 24, I-10129 Turin, Italy..
    Chiozzi, S.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy..
    Cibinetto, G.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy..
    Cossio, F.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Politecn Torino, Dipartimento Elettron & Telecomunicaz, Corso Duca Abruzzi 24, I-10129 Turin, Italy..
    Ramusino, A. Cotta
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy..
    De Mori, F.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy..
    Destefanis, M.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy..
    Di Francesco, A.
    Lab Instrumentacao & Fis Expt Particulas LIP, Av Elias Garcia 14, P-1000149 Lisbon, Portugal..
    Dong, J.
    Evangelisti, F.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy..
    Farinelli, R.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy.;Univ Ferrara, Dipartimento Fis, Via G Saragat 1, I-44122 Ferrara, Italy..
    Fava, L.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy..
    Felici, G.
    INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy..
    Fioravanti, E.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy..
    Garzia, I.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy.;Univ Ferrara, Dipartimento Fis, Via G Saragat 1, I-44122 Ferrara, Italy..
    Gatta, M.
    INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy..
    Greco, M.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy..
    Lavezzi, L.
    Chinese Acad Sci, Inst High Energy Phys, 19B YuquanLu, Beijing 100049, Peoples R China.;INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy..
    Leng, C. Y.
    Chinese Acad Sci, Inst High Energy Phys, 19B YuquanLu, Beijing 100049, Peoples R China.;INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Politecn Torino, Dipartimento Elettron & Telecomunicaz, Corso Duca Abruzzi 24, I-10129 Turin, Italy..
    Li, H.
    Chinese Acad Sci, Inst High Energy Phys, 19B YuquanLu, Beijing 100049, Peoples R China.;INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy..
    Maggiora, M.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy..
    Malaguti, R.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy..
    Marcello, S.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy..
    Marcinievski, Pawel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
    Melchiorri, M.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy..
    Mezzadri, G.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy.;Univ Ferrara, Dipartimento Fis, Via G Saragat 1, I-44122 Ferrara, Italy..
    Mignone, M.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy..
    Morello, G.
    INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy..
    Pacetti, S.
    INFN, Sez Perugia, Via A Pascoli 14, I-06123 Perugia, Italy.;Univ Perugia, Dipartimento Fis & Geol, Via A Pascoli 14, I-06123 Perugia, Italy..
    Patteri, P.
    INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy..
    Pellegrino, J.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy..
    Pelosi, A.
    INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy.;Univ Roma La Sapienza, INFN, Sez Roma, Ple A Moro 2, I-00185 Rome, Italy..
    Rivetti, A.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy..
    Savrie, M.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy.;Univ Ferrara, Dipartimento Fis, Via G Saragat 1, I-44122 Ferrara, Italy..
    Scodeggio, M.
    INFN, Sez Ferrara, Via G Saragat 1, I-44122 Ferrara, Italy.;Univ Ferrara, Dipartimento Fis, Via G Saragat 1, I-44122 Ferrara, Italy..
    Soldani, E.
    INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy..
    Sosio, S.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy..
    Spataro, S.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy..
    Tskhadadze, E.
    INFN, Lab Nazl Frascati, Via E Fermi 40, I-00044 Rome, Italy.;JINR, Joliot Curie 6, Dubna 141980, Moscow Region, Russia..
    Varela, J.
    Lab Instrumentacao & Fis Expt Particulas LIP, Av Elias Garcia 14, P-1000149 Lisbon, Portugal..
    Verma, S.
    Univ Ferrara, Dipartimento Fis, Via G Saragat 1, I-44122 Ferrara, Italy..
    Wheadon, R.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy..
    Yan, L.
    INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy..
    A custom readout electronics for the BESIII CGEM detector2017In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 12, article id C07017Article in journal (Refereed)
    Abstract [en]

    For the upgrade of the inner tracker of the BESIII spectrometer, planned for 2018, a lightweight tracker based on an innovative Cylindrical Gas Electron Multiplier (CGEM) detector is now under development. The analogue readout of the CGEM enables the use of a charge centroid algorithm to improve the spatial resolution to better than 130 mu m while loosening the pitch strip to 650 mu m, which allows to reduce the total number of channels to about 10 000. The channels are readout by 160 dedicated integrated 64-channel front-end ASICs, providing a time and charge measurement and featuring a fully-digital output. The energy measurement is extracted either from the time-over-threshold (ToT) or the 10-bit digitisation of the peak amplitude of the signal. The time of the event is generated by quad-buffered low-power TDCs, allowing for rates in excess of 60 kHz per channel. The TDCs are based on analogue interpolation techniques and produce a time stamp (or two, if working in ToT mode) of the event with a time resolution better than 50 ps. The front-end noise, based on a CSA and a two-stage complex conjugated pole shapers, dominate the channel intrinsic time jitter, which is less than 5 ns r.m.s. The time information of the hit can be used to reconstruct the track path, operating the detector as a small TPC and hence improving the position resolution when the distribution of the cloud, due to large incident angle or magnetic field, is very broad. Event data is collected by an off-detector motherboard, where each GEM-ROC readout card handles 4 ASIC carrier FEBs (512 channels). Configuration upload and data readout between the off-detector electronics and the VME-based data collector cards are managed by bi-directional fibre optical links. This paper covers the design of a custom front-end electronics for the readout of the new inner tracker of the BESIII experiment, addressing the relevant design aspects of the detector electronics and the front-end ASIC for the CGEM readout, and reviewing the first silicon results of the chip prototype.

  • 38.
    Schuch, Reinhold
    et al.
    Stockholms universitet, Fysikum.
    Tashenov, Stanislav
    Stockholms universitet, Fysikum.
    Orban, Istvan
    Stockholms universitet, Fysikum.
    Hobein, Matthias
    Stockholms universitet, Fysikum.
    Mahmood, Sultan
    Stockholms universitet, Fysikum.
    Kamalou, O.
    Stockholms universitet, Fysikum.
    Akram, Nadeem
    Stockholms universitet, Fysikum.
    Safdar, Ali
    Stockholms universitet, Fysikum.
    Skog, Patrik
    Stockholms universitet, Fysikum.
    Solders, Andreas
    Stockholms universitet, Fysikum.
    Zhang, Hongqiang
    Stockholms universitet, Fysikum.
    The new Stockholm Electron Beam Ion Trap (S-EBIT)2010In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 5, p. C12018-Article in journal (Refereed)
    Abstract [en]

    A new laboratory for highly charged ions is being built up at Stockholm University. A fully refrigerated electron beam ion trap (R-EBIT, 3 T magnet, 30 keV electron energy) was installed. It was used for spectroscopic studies, ion cooling experiments, electron ion collisions, and highly-charged ion surface studies. Here we report on an upgrade of this EBIT to a ``Super EBIT'' (S-EBIT, 4 T magnet, 260 keV electron energy). The high-voltage trapping system, the ion injection as well as the extraction scheme of S-EBIT and the LabView based operational system of S-EBIT are described.

  • 39. Soltveit, H. K.
    et al.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Schoening, A.
    Wiedner, D.
    Multi-gigabit wireless data transfer at 60GHz2012In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 7, p. C12016-Article in journal (Refereed)
    Abstract [en]

    In this paper we describe the status of the first prototype of the 60 GHz wireless Multi-gigabit data transfer topology currently under development at University of Heidelberg using IBM 130 nm SiGe HBT BiCMOS technology. The 60 GHz band is very suitable for high data rate and short distance applications. One application can be a wireless multi Gbps radial data transmission inside the ATLAS silicon strip detector, making a first level track trigger feasible. The wireless transceiver consists of a transmitter and a receiver. The transmitter includes an On-Off Keying (OOK) modulator, a Local Oscillator (LO), a Power Amplifier (PA) and a Band-pass Filter (BPF). The receiver part is composed of a Band-pass Filter (BPF), a Low Noise Amplifier (LNA), a double balanced down-convert Gilbert mixer, a Local Oscillator (LO), then a BPF to remove the mixer introduced noise, an Intermediate Amplifier (IF), an On-Off Keying demodulator and a limiting amplifier. The first prototype would be able to handle a data-rate of about 3.5 Gbps over a link distance of 1 m. The first simulations of the LNA show that a Noise figure (NF) of 5 dB, a power gain of 21 dB at 60 GHz with a 3 dB bandwidth of more than 20 GHz with a power consumption 11mW are achieved. Simulations of the PA show an output referred compression point P1dB of 19.7 dB at 60 GHz.

  • 40.
    Sperduti, Andrea
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Angelone, M.
    ENEA, Dept Fus & Technol Nucl Safety & Secur, Via E Fermi 45, I-00044 Frascati, Italy..
    Bedogni, R.
    Ist Nazl Fis Nucl, Frascati Natl Labs, Via E Fermi 44, I-00044 Frascati, Italy..
    Claps, G.
    ENEA, Dept Fus & Technol Nucl Safety & Secur, Via E Fermi 45, I-00044 Frascati, Italy..
    Diociaiuti, E.
    Ist Nazl Fis Nucl, Frascati Natl Labs, Via E Fermi 44, I-00044 Frascati, Italy..
    Domingo, C.
    Univ Autonoma Barcelona, Phys Dept, Pl Civ S-N, E-08193 Barcelona, Spain..
    Donghia, R.
    Ist Nazl Fis Nucl, Frascati Natl Labs, Via E Fermi 44, I-00044 Frascati, Italy..
    Giovannella, S.
    Ist Nazl Fis Nucl, Frascati Natl Labs, Via E Fermi 44, I-00044 Frascati, Italy..
    Gomez-Ros, J. M.
    CIEMAT, Av Complutense 40, E-28040 Madrid, Spain..
    Irazola-Rosales, L.
    Univ Seville, Dept Fisiol Med & Biofis, Calle Dr Fedriani 3, E-41009 Seville, Spain..
    Loreti, S.
    ENEA, Dept Fus & Technol Nucl Safety & Secur, Via E Fermi 45, I-00044 Frascati, Italy..
    Monti, V.
    Ist Nazl Fis Nucl, Sez Torino, Via Pietro Giuria 1, I-10125 Turin, Italy..
    Miscetti, S.
    Ist Nazl Fis Nucl, Frascati Natl Labs, Via E Fermi 44, I-00044 Frascati, Italy..
    Murtas, F.
    Ist Nazl Fis Nucl, Frascati Natl Labs, Via E Fermi 44, I-00044 Frascati, Italy..
    Pagano, G.
    ENEA, Dept Fus & Technol Nucl Safety & Secur, Via E Fermi 45, I-00044 Frascati, Italy..
    Pillon, M.
    ENEA, Dept Fus & Technol Nucl Safety & Secur, Via E Fermi 45, I-00044 Frascati, Italy..
    Pilotti, R.
    ENEA, Dept Fus & Technol Nucl Safety & Secur, Via E Fermi 45, I-00044 Frascati, Italy..
    Pola, A.
    Politecn Milan, Energy Dept, Via La Masa 34, I-20156 Milan, Italy..
    Romero-Exposito, M.
    Univ Autonoma Barcelona, Phys Dept, Pl Civ S-N, E-08193 Barcelona, Spain..
    Sanchez-Doblado, F.
    CIEMAT, Av Complutense 40, E-28040 Madrid, Spain..
    Sans-Planell, O.
    Univ Rovira & Virgili, Carrer Escorxador S-N, Tarragona 43003, Spain..
    Scherillo, A.
    ISIS Facil, Sci & Technol Facil Council, Didcot 0Q11, Oxon, England..
    Soldani, E.
    Ist Nazl Fis Nucl, Frascati Natl Labs, Via E Fermi 44, I-00044 Frascati, Italy..
    Treccani, M.
    Univ Autonoma Barcelona, Phys Dept, Pl Civ S-N, E-08193 Barcelona, Spain..
    Pietropaolo, A.
    Ist Nazl Fis Nucl, Frascati Natl Labs, Via E Fermi 44, I-00044 Frascati, Italy..
    Results of the first user program on the HOmogeneous Thermal NEutron Source HOTNES (ENEA/INFN)2017In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 12, article id P12029Article in journal (Refereed)
    Abstract [en]

    The HOmogeneous Thermal NEutron Source (HOTNES) is a new type of thermal neutron irradiation assembly developed by the ENEA-INFN collaboration. The facility is fully characterized in terms of neutron field and dosimetric quantities, by either computational and experimental methods. This paper reports the results of the first "HOTNES users program", carried out in 2016, and covering a variety of thermal neutron active detectors such as scintillators, solid-state, single crystal diamond and gaseous detectors.

  • 41.
    Suhonen, Markus
    et al.
    Stockholms universitet, Fysikum.
    Bergström, Ingmar
    Stockholms universitet, Manne Siegbahn-laboratoriet.
    Fritioff, Tomas
    Stockholms universitet, Fysikum.
    Nagy, Szilard
    Stockholms universitet, Fysikum.
    Solders, Andreas
    Stockholms universitet, Fysikum.
    Schuch, Reinhold
    Stockholms universitet, Fysikum.
    High-frequency Ramsey excitation in a Penning trap2007In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 2, no P06003, p. 1-14Article in journal (Refereed)
    Abstract [en]

    The Ramsey excitation method for high-precision mass-measurements of highly-charged ions has been investigated and benchmarked using H2+ ions in the Penning-trap mass-spectrometer SMILETRAP. The reason for using H2+ ions are their high cyclotron frequency which is typical for the highly-charged ions usually used at SMILETRAP. Two-, three- and four-pulse Ramsey excitation data are analyzed with the help of recent theoretical work and are compared with the previously used single-pulse excitation data. An improvement factor of 2.9 in the statistical uncertainty is achieved. Furthermore the mass of 76Se, included in the previous Q-value measurement of the 76Ge neutrinoless double beta decay, is checked using 76Se25+ ions and a three-pulse Ramsey excitation. The results show a convincing agreement with the measurement when using single-pulse excitation and therefore our Q-value of 2039.006(50) keV, performed with single-pulse excitation, is confirmed.

  • 42. Thungstrom, G.
    et al.
    Esebamen, O.
    Krapohl, D.
    Frojdh, C.
    Nilsson, H. -E
    Petersson, S.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Fabrication, characterization and simulation of channel stop for n in p-substrate silicon pixel detectors2014In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, p. C07013-Article in journal (Refereed)
    Abstract [en]

    Silicon detectors made on p-substrates are expected to have a better radiation hardness as compared to detectors made on n-substrates. However, the fixed positive oxide charges induce an inversion layer of electrons in the substrate, which connects the pixels. The common means of solving this problem is by using a p-spray, individual p-stops or a combination of the two. Here, we investigate the use of field plates to suppress the fixed positive charges and to prevent the formation of an inversion layer. The fabricated detector shows a high breakdown voltage and low interpixel leakage current for a structure using biased field plates with a width of 20 m m. By using a spice model for simulation of the preamplifier, a cross talk of about 1.6% is achieved with this detector structure. The cross talk is caused by capacitive and resistive coupling between the pixels.

  • 43. Turcato, M.
    et al.
    Gessler, P.
    Hauf, S.
    Kuster, M.
    Meyer, M.
    Nordgren, Joseph
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Sztuk-Dambietz, J.
    Youngman, C.
    Small area detectors at the European XFEL2014In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, p. C05063-Article in journal (Refereed)
    Abstract [en]

    The detectors to be used at the European XFEL have to deal with the unique time structure of the machine, delivering up to 2700 pulses, with a repetition rate of 4.5 MHz, ten times per second, the very high photon flux and the need to combine single-photon sensitivity and a large dynamic range. This represents a challenge not only for the large-area 2D imaging detectors but also for the smaller-area detectors and makes the use of standard commercial devices impossible. Dedicated solutions are therefore envisaged for small imaging- or strip-detectors. In this contribution the focus is put on two particular small-area detector solutions which are planned to be used at the European XFEL, a strip detector for hard X-rays (with energy 3 < E < 25keV) and an imaging detector for soft X-rays (0.25 < E < 3keV). Hard X-rays photon-beam diagnostics as well as hard X-ray absorption and emission spectroscopy at the European XFEL make use of strip detectors as detectors for beam spectrometers or as energy-dispersive detectors in combination with an energy-dispersive element. The European XFEL is establishing cooperation with the Paul Scherrer Institute in Villigen to develop a new version of the Gotthard detector best suited to the European XFEL needs. The use case and the required detector specifications are illustrated. Starting from the present detector version, the modifications planned to adapt it to the European XFEL running conditions are described. These include the capability of running at an increased rate and to provide a veto signal to the large 2D imaging detectors, in order to be able to remove non-interesting images already at early stages of the DAQ system. In another particular application, resonant inelastic X-ray scattering, a Micro-Channel Plate detector matched to a delay-line readout is foreseen to be used. In this case the European XFEL is aiming for a highly customized solution provided by the German company Surface Concept. The use case is described, the science-driven detector specifications are illustrated and the expected detector performance is shown.

  • 44. Wilson, J. A.
    et al.
    Abdesselam, A.
    Allport, P. P.
    Apsimon, R. J.
    Band, C.
    Barr, A. J.
    Batchelor, L.
    Bates, R.
    Bell, P.
    Bernabeu, J.
    Bizzell, J.
    Brenner, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Brodbeck, T.
    de Renstrom, P. Bruckman
    Buttar, C.
    Carter, J. R.
    Charlton, D. G.
    Cheplakov, A.
    Chilingarov, A.
    Chu, M. L.
    Colijn, A-P.
    Dawson, I.
    Demirkoz, B.
    De Jong, P.
    Dervan, P. J.
    Dolezal, Z.
    Dowell, J. D.
    Escobar, C.
    Spencer, E.
    Ekelof, T.
    Eklund, L.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Ferrere, D.
    Fraser, T. J.
    French, M.
    French, R.
    Fuster, J.
    Gallop, B. J.
    Garca, C.
    Goodrick, M. J.
    Greenall, A.
    Grillo, A. A.
    Grosse-Knetter, J.
    Hartjes, F.
    Hessey, N. P.
    Hill, J. C.
    Homer, R. J.
    Hou, L. S.
    Hughes, G.
    Ikegami, Y.
    Issever, C.
    Jackson, J. N.
    Jones, M.
    Jones, T. J.
    Jovanovic, P.
    Koffeman, E.
    Kodys, P.
    Kohriki, T.
    Lee, S. -C.
    Lester, C. G.
    Limper, M.
    Lindsay, S. W.
    Lozano, M.
    Macwaters, C. P.
    Magrath, C. A.
    Mahout, G.
    Mandic, I.
    Matheson, J.
    McMahon, T. J.
    Mikulec, B.
    Muijs, A. J. M.
    Morrissey, M.
    Nichols, A.
    Nickerson, R. B.
    O'Shea, V.
    Pagenis, S.
    Parker, M. A.
    Pater, J.
    Perrin, E.
    Pernegger, H.
    Peeters, S. J. M.
    Phillips, P. W.
    Postranecky, M.
    Robinson, D.
    Robson, A.
    Rudge, A.
    Sandaker, H.
    Sedlak, K.
    Smith, N. A.
    Stapnes, S.
    Stugu, B.
    Teng, P. K.
    Terada, S.
    Tricoli, A.
    Tyndel, M.
    Ujiie, N.
    Ulln, M.
    Unno, Y.
    van der Kraaij, E.
    van Vulpen, I.
    Viehhauser, G.
    Vossebeld, J. H.
    Warren, M. R. M.
    Wastie, R. L.
    Weidberg, A. R.
    Wells, P. S.
    Whitet, D. J.
    The optical links of the ATLAS SemiConductor tracker2007In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 2, p. 1-28Article in journal (Refereed)
    Abstract [en]

    Optical links are used for the readout of the 4088 silicon microstrip modules that make up the SemiConductor Tracker of the ATLAS experiment at the CERN Large Hadron Collider (LHC). The optical link requirements are reviewed, with particular emphasis on the very demanding environment at the LHC. The on-detector components have to operate in high radiation levels for 10 years, with no maintenance, and there are very strict requirements on power consumption, material and space. A novel concept for the packaging of the on-detector optoelectronics has been developed to meet these requirements. The system architecture, including its redundancy features, is explained and the critical on-detector components are described. The results of the extensive Quality Assurance performed during all steps of the assembly are discussed.

1 - 44 of 44
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