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Performance simulation studies for the ALICE TPC GEM upgrade

Ljunggren, M. LU (2016) In Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 824. p.548-550
Abstract

To be able to exploit the anticipated interaction rate of 50 kHz in Pb-Pb collisions during run 3 of the LHC (beyond 2019), the ALICE TPC will be upgraded to allow continuous readout. As this is not possible with the current Multi Wire Proportional Chamber (MWPC) based amplification, the readout will be replaced with Gas Electron Multiplier (GEM) readout chambers that can suppress ~ 99% of the ion back flow. The space charge of the remaining 1% ion back flow, however, will cause significant distortions to the measured tracks of order cm. Simulation studies to characterize the distortions and test correction strategies have been performed, which show that the intrinsic momentum resolution, without these distortions, can be recovered.

Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
GEM, Micro-pattern gas detectors, TPC, Tracking detectors
in
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
volume
824
pages
3 pages
publisher
Elsevier
external identifiers
  • scopus:84954306680
ISSN
0168-9002
DOI
10.1016/j.nima.2015.12.059
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2016 The Author. Published by Elsevier B.V. All rights reserved.
id
28a181b9-4e6b-44b9-af21-65d63f0234b6
date added to LUP
2022-03-29 10:26:34
date last changed
2023-01-01 20:59:49
@article{28a181b9-4e6b-44b9-af21-65d63f0234b6,
  abstract     = {{<p>To be able to exploit the anticipated interaction rate of 50 kHz in Pb-Pb collisions during run 3 of the LHC (beyond 2019), the ALICE TPC will be upgraded to allow continuous readout. As this is not possible with the current Multi Wire Proportional Chamber (MWPC) based amplification, the readout will be replaced with Gas Electron Multiplier (GEM) readout chambers that can suppress ~ 99% of the ion back flow. The space charge of the remaining 1% ion back flow, however, will cause significant distortions to the measured tracks of order cm. Simulation studies to characterize the distortions and test correction strategies have been performed, which show that the intrinsic momentum resolution, without these distortions, can be recovered.</p>}},
  author       = {{Ljunggren, M.}},
  issn         = {{0168-9002}},
  keywords     = {{GEM; Micro-pattern gas detectors; TPC; Tracking detectors}},
  language     = {{eng}},
  month        = {{07}},
  pages        = {{548--550}},
  publisher    = {{Elsevier}},
  series       = {{Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment}},
  title        = {{Performance simulation studies for the ALICE TPC GEM upgrade}},
  url          = {{http://dx.doi.org/10.1016/j.nima.2015.12.059}},
  doi          = {{10.1016/j.nima.2015.12.059}},
  volume       = {{824}},
  year         = {{2016}},
}