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Heidelberg 2022 – scientific programme

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T: Fachverband Teilchenphysik

T 67: Myon Detectors

T 67.8: Talk

Wednesday, March 23, 2022, 18:10–18:25, T-H26

A first look at CMS gas electron multiplier data and certificationThomas Hebbeker, Kerstin Hoepfner, Francesco Ivone, and •Shawn Zaleski — III Physikalisches Institut A, RWTH Aachen University

To accommodate the increased radiation doses expected during the upcoming Run 3 at the CERN LHC, one of the primary experiments there, the Compact Muon Solenoid (CMS) will be upgraded. The first part of this upgrade, the installation of the gas electron multiplier (GEM) GE1/1 detector has been completed recently to help CMS cope with the radiation levels. The GEM chambers that comprise the GE1/1 detector have passed a rigorous battery of quality checks and are currently being commissioned in the end caps of the CMS muon system.

Initial data has been recorded by the GE1/1 detector using cosmic ray muon as well as proton-proton collision data. Dedicated data collection runs with and without the CMS 3.8 T magnetic field were performed. Certification procedures for this new GEM system have been developed and are being integrated with the existing procedures from the other CMS muon subsystems.

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