Year: 2025
Type: article
Abstract: Cathode Strip Chambers (CSCs) are used in the muon system of the CMS experiment at LHC. There are four muon stations on both endcaps consisting of 540 CSCs operating with $$40\%\textrm{Ar}+50\%\textrm{CO}_{2}+10\%\textrm{CF}_{4}$$ gas mixture. The chamber longevity study is particularly important in anticipation of the future LHC upgrade into High Luminosity LHC (HL-LHC) and the scheduled upgrade of the CMS detector. CSC longevity is studied with two CMS chambers: ME1/1 and ME2/1 at the Gamma Irradiation Facility (GIF++, CERN). The tests did not show any degradation in the chamber’s performance. The study of the reduction of, or possible replacement of, the CF $${}_{4}$$ in the working gas mixture is also ongoing, including longevity studies with small CSC prototypes.
Source: Physics of Atomic Nuclei
Institutions: University of Florida, Joint Institute for Nuclear Research
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7128440445