Experimental Particle and Astro-Particle Physics Seminar

Stefanos Leontsinis (University of Zurich (CH))

Abstract: The Large Hadron Collider at CERN is undergoing upgrades which will increase the instantaneous luminosity to 5x10^(34) cm^(-2)s^(-1), a factor of 2.5 higher than the previous one. Therefore, the experiments are implementing upgrades to cope with the augmented particle rates. In the muon system of the Compact Muon Solenoid (CMS) experiment Gas Electron Multipliers (GEMs) are being installed to complement the existing Cathode Strip Chambers (CSCs). This will provide a more precise measurement of the muon bending angle and thus improve the muon trigger. GEMs are gaseous detectors with high rate capabilities–ideal for the forward regions of the CMS muon system. In preparation for the LHC Run-3, 144 GEM chambers were installed in the first muon station and are beginning operations. Two additional GEM rings are being developed and produced, to be installed before LHC Run-4. This talk will introduce the GEM technology and discuss the production, installation, and commissioning of the new GEM muon detectors at CMS.

    • 2:00 PM 3:00 PM
      Installation and commissioning of the new GEM muon detectors in the CMS experiment 1h
      Speaker: Brendan Regnery (University of California Davis (US))