Speaker
Dr
Tania Moulik
(Department of Physics - National Inst. of Science Education and Research)
Description
The forward region of the RPC muon system of the CMS experiment at the LHC is not instrumented at present. A multi-institutional collaboration is investigating the possibility of enhancing muon tracking and triggering capabilities in the region 1.6 < eta < 2.1 by instrumenting the end-cap muon system with large-area Triple-GEM detectors. These Micropattern Gaseous Detectors are an appealing option for such a future upgrade because of their good
spatial resolution, high rate capability, and radiation hardness. The availability of highly integrated amplication and readout electronics would allow for the design of a system with channel
densities comparable to that of modern silicon detectors. We present studies of a Triple-GEM detector simulated using ANSYS (FEM package) and GARFIELD for various electric field congurations and gas mixtures, such as Ar/CO2/CF4 and Ar/CO2, and in the presence of a
3T magnetic eld. The result on many key parameters such as gas gain, drift velocities are described. Good agreement with measurements of the LHCb Triple-GEM performance is observed. Preliminary simulation studies of muon reconstruction and trigger performance of the
envisaged muon upgrade in the CMS high-eta region are also presented.
Author
Dr
Tania Moulik
(Department of Physics - National Inst. of Science Education and Research)
