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Martin Ljunggren

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Performance simulation studies for the ALICE TPC GEM upgrade

Author

  • M. Ljunggren

Summary, in English

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.

Department/s

  • Particle and nuclear physics

Publishing year

2016-07-11

Language

English

Pages

548-550

Publication/Series

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

Volume

824

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Keywords

  • GEM
  • Micro-pattern gas detectors
  • TPC
  • Tracking detectors

Status

Published

ISBN/ISSN/Other

  • ISSN: 0168-9002