Study of the dE/dx resolution of a GEM Readout Chamber prototype for the upgrade of the ALICE TPC
Physik Department E62, Technische Universität München, 85748 Garching, Germany
2 Excellence Cluster ’Origin and Structure of the Universe’, 85748 Garching, Germany
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Published online: 21 February 2018
The ALICE Collaboration is planning a major upgrade of its central barrel detectors to be able to cope with the increased LHC luminosity beyond 2020. For the TPC, this implies a replacement of the currently used gated MWPCs (Multi-Wire Proportional Chamber) by GEM (Gas Electron Multiplier) based readout chambers. In order to prove, that the present particle identification capabilities via measurement of the specific energy loss are retained after the upgrade, a prototype of the ALICE IROC (Inner Readout Chamber) has been evaluated in a test beam campaign at the CERN PS. The dE/dx resolution of the prototype has been proven to be fully compatible with the current MWPCs.
© The Authors, published by EDP Sciences, 2018
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