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A cylindrical GEM detector with analog readout for the BESIII experiment
NFN Turin, Turin, Italy.;Univ Turin, I-10124 Turin, Italy..
Ist Nazl Fis Nucl, Lab Nazl Frascati, POB 13, I-00044 Frascati, Italy..
Ist Nazl Fis Nucl, Lab Nazl Frascati, POB 13, I-00044 Frascati, Italy..
INFN Ferrara, Ferrara, Italy..
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2016 (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. 824, 515-517 p.Article in journal (Refereed) PublishedText
Abstract [en]

A cylindrical GEM detector with analog readout is under development for the upgrade of the Inner Tracker of the BESIII experiment at IHEP (Beijing). The new detector will match the requirements for momentum resolution (sigma(pt) /p(t) similar to 0.5% at 1 GeV) and radial resolution (sigma(xy) similar to 120 mu m) of the existing drift chamber and will improve significantly the spatial resolution along the beam direction (sigma(z) similar to 150 mu m) with very small material budget (less than 1.5% of X-0). With respect to the state of the art the following innovations will be deployed: a lighter mechanical structure based on Rohacell, a new XV anode readout plane with jagged strip layout to reduce the parasitic capacitance, and the use of the analogue readout inside a high intensity magnetic field to have good spatial resolution without increasing the number of channels.

Place, publisher, year, edition, pages
2016. Vol. 824, 515-517 p.
Keyword [en]
Tracking detectors, GEM, Micro-pattern gas detectors, BESIII experiment
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-297247DOI: 10.1016/j.nima.2015.11.082ISI: 000375408700175OAI: oai:DiVA.org:uu-297247DiVA: diva2:944240
Available from: 2016-06-29 Created: 2016-06-22 Last updated: 2016-06-29Bibliographically approved

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Johansson, TordMarciniewski, Pawel
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Nuclear Physics
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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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