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SUMMARY:Longevity Studies of the CMS Muon System for HL-LHC
DTSTART;VALUE=DATE-TIME:20230905T102000Z
DTEND;VALUE=DATE-TIME:20230905T104000Z
DTSTAMP;VALUE=DATE-TIME:20260906T152338Z
UID:indico-contribution-2956@indico.tlabs.ac.za
DESCRIPTION:Speakers: Lisa Borgonovi (Università e INFN Bologna)\nDuring 
 the upcoming years of the High Luminosity Large Hadron Collider (HL-LHC) p
 rogram\, the CMS Muon spectrometer will face challenging conditions. The e
 xisting detectors\, which consist of Drift Tubes (DT)\, Resistive Plate Ch
 ambers (RPC)\, and Cathode Strip Chambers (CSC)\, as well as recently inst
 alled Gas Electron Multiplier (GEM) stations\, will need to sustain an ins
 tantaneous luminosity of up to $5-7 \\cdot 10^{34}$ cm$^{−2}$s$^{−1}$\
 , resulting in increased pile-up\, and about 10 times the expected LHC int
 egrated luminosity. To cope with the high rate environment and maintain go
 od performance\, additional GEM stations and improved RPC (iRPC) detectors
  will be installed in the innermost region of the forward muon spectromete
 r. The CMS muon system upgrade program includes\, together with the substi
 tution of the on-detector and backend electronics of the existing detector
 s\, accelerated irradiation studies performed at the CERN Gamma Irradiatio
 n Facility (GIF++) or with specific X-ray sources\, in order to certify th
 e detector performance for 10 years of operation under the harsh HL-LHC co
 nditions. Furthermore\, since RPCs and CSCs use gases with a global warmin
 g potential (GWP)\, ongoing efforts are being made to find new eco-friendl
 y gas mixtures\, as part of the CERN-wide program to phase out fluorinated
  greenhouse gases. This report presents the status of the CMS Muon system 
 longevity studies\, along with actions taken to reduce detector aging and 
 minimize greenhouse gas consumption.\n\nhttps://indico.tlabs.ac.za/event/1
 12/contributions/2956/
LOCATION: Meeting Room 2-61 - 2.63
URL:https://indico.tlabs.ac.za/event/112/contributions/2956/
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