Speaker
Description
To maintain the performance of muon triggering and reconstruction under high background at HL-LHC, the forward part of the muon spectrometer of the CMS experiment will be upgraded with Gas Electron Multipliers (GEM). A first GEM station (GE1/1), covering about 50m2, was installed during the Long Shutdown 2 (LS2, 2019–2021). Three GE2/1 chambers have additionally been installed during the pauses of the current Run-3, while the rest is postponed to after high luminosity upgrades. A third d 6-layer station (ME0), covering about 60m2, will extend the pseudo-rapidity coverage of the muon system from |n|<2.4 to |n| <2.8 and will be installed behind the new high-granularity calorimeter (HGCAL) during the third Long Shutdown (LS3, 2026–2028). This talk will provide an overview of the current progress with some focus on CMS-China group's contributions.
| 请选择分会 | 粒子物理实验技术 |
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