31 August 2026 to 4 September 2026
Masarykova Kolej Congress Centre, Czech Technical University in Prague
Europe/Prague timezone

Operation of the CMS GE1/1 GEM Detector in Run 3: Performance and Lessons Learned

1 Sept 2026, 15:40
17m
Oral presentation Detector Physics Plenary Session

Speaker

Pieter Everaerts (University of Wisconsin (US))

Description

The GE1/1 detector system was installed in the CMS experiment during the LHC Long Shutdown 2 to enhance muon measurement and trigger performance in the pseudo-rapidity region 1.55 < |η| < 2.18. The system has been operational since the beginning of LHC Run 3. We describe how the operation of the detectors and electronics was continuously adjusted during data taking to improve the overall system performance and ensure its integration in the level-1 trigger. We report on discharges and generation of short circuits that were observed during operation of the CMS magnet. Other sources of inefficiencies and degraded timing resolution are also reported. R&D studies have led to design improvements that can be applied to the existing GE1/1 system. A comprehensive refurbishment program has been developed and will be implemented during Long Shutdown 3.

Name of the speaker Pieter Everaerts
Eligible for the Georges Charpak Young Scientist Award. no

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