Abstract
The performance of MicroStrip Gas Chamber (MSGC) prototypes, developed for the barrel Tracking Detector of the Compact Muon Solenoid (CMS) experiment at LHC, has been extensively tested over the last years. We report the results from the most recent beam tests, which illustrate the standard performance of the detectors and the robustness of the MSGC technology in LHC-like beam conditions.
Highlights
The MicroStrip Gas Chamber (MSGC) technology, suitable for building large area tracking devices, has been adopted for instrumentation of the outer parts of the Compact Muon Solenoid (CMS) tracking volume [1]
The comparison with expected LHC conditions is shown in the same figure: considering the T10 duty cycle, the beam test amounts to about 7.7 hours of continuous beam at a rate comparable or larger than the one expected at LHC at a radial distance of 100 cm from the beam pipe
A set of CMS MSGCs has been exposed to a high rate of mips during two beam test periods
Summary
The MSGC technology, suitable for building large area tracking devices, has been adopted for instrumentation of the outer parts of the CMS tracking volume [1]. The performance of the CMS MSGC prototypes has been extensively tested in the past using high momentum particles at low rates compared to the LHC conditions. The main results obtained at the most recent test of this type are briefly reported here. In order to verify the stability of the chambers in realistic LHC conditions, multiple tests with radioactive sources and two beam tests have been performed recently. We report here the beam tests dedicated to investigate the behaviour of the MSGCs exposed to high rate of mips and heavily ionizing particles produced by nuclear interactions with setup material
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