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Calibration and characterization of the IceCube photomultiplier tube
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2010 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 618, no 1-3, 139-152 p.Article in journal (Refereed) Published
Abstract [en]

Over 5000 PMTs are being deployed at the South Pole to compose the IceCube neutrino observatory. Many are placed deep in the ice to detect Cherenkov light emitted by the products of high-energy neutrino interactions, and others are frozen into tanks on the surface to detect particles from atmospheric cosmic ray showers. IceCube is using the 10-in. diameter R7081-02 made by Hamamatsu Photonics. This paper describes the laboratory characterization and calibration of these PMTs before deployment. PMTs were illuminated with pulses ranging from single photons to saturation level. Parameterizations are given for the single photoelectron charge spectrum and the saturation behavior. Time resolution, late pulses and afterpulses are characterized. Because the PMTs are relatively large, the cathode sensitivity uniformity was measured. The absolute photon detection efficiency was calibrated using Rayleigh-scattered photons from a nitrogen laser. Measured characteristics are discussed in the context of their relevance to IceCube event reconstruction and simulation efforts.

Place, publisher, year, edition, pages
2010. Vol. 618, no 1-3, 139-152 p.
Keyword [en]
PMT, Neutrino, Cosmic rays, Ice, Cherenkov
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-138727DOI: 10.1016/j.nima.2010.03.102ISI: 000279134000015OAI: oai:DiVA.org:uu-138727DiVA: diva2:379702
Available from: 2010-12-19 Created: 2010-12-19 Last updated: 2017-12-11Bibliographically approved

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de los Heros, Carlos Perez

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High Energy Physics
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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Astronomy, Astrophysics and Cosmology

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