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Signal shapes in a TPC wire chamber

Authors
Journal
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
0168-9002
Publisher
Elsevier
Publication Date
Volume
623
Issue
3
Identifiers
DOI: 10.1016/j.nima.2010.07.061
Keywords
  • Electron Avalanche
  • Ion Tail
  • Multiwire Proportional Chamber
Disciplines
  • Mathematics

Abstract

Abstract We study signal shapes in Multi Wire Proportional Chambers (MWPCs) and the influence of the electron distribution around the wire on the ion tail characteristics. Simulations of the ion tail for two different geometries, different voltages and therefore gas gains were performed. These simulations are compared to measurements carried out with the ALICE TPC wire chambers for a Ne/CO 2/N 2 gas mixture, which allows to extract the avalanche spread around the anode wires of the MWPC.

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