PoS - Proceedings of Science
Volume 450 - The Eleventh Annual Conference on Large Hadron Collider Physics (LHCP2023) - session Poster session
Monitoring the CMS endcap muon cathode strip chambers for aging
N. Rawal
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Pre-published on: January 15, 2024
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The Cathode Strip Chambers (CSCs) are multi-wire proportional chambers with cathode strip readout, and they constitute the primary muon tracking device in the endcaps of the CMS experi- ment at the LHC. The CSCs have accumulated a significant radiation dose since the beginning of LHC operations, and it is important to monitor any possible signs of aging and confirm that the detector can sustain the full expected integrated luminosity of the HL-LHC (3000 \(\text{fb}^{−1}\)). Aging effects are assessed by performing in-situ measurements of the gas gain in CSCs as a function of the integrated luminosity. Signs of aging could appear as a decreasing gas gain with increased integrated luminosity. CSC gas gain is studied using muon-induced charge on cathodes using data collected during 2022, corresponding to 39.4 \(\text{fb}^{−1}\) . The impact of atmospheric pressure and changes in detector settings (HV, gas mixture, etc.) are also taken into account.
DOI: https://doi.org/10.22323/1.450.0279
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