Description
The MUon Scattering Experiment (MUSE) at the Paul Scherrer Institute (PSI) is designed to address the long-standing discrepancy in measurements of the proton charge radius. The experiment uses mixed beams of electrons and muons, with either positive and negative charges, allowing the proton charge radius to be extracted from electron–proton and muon–proton scattering under identical experimental conditions. Precise tracking of incoming particles is essential for this measurement. To accomplish this, a Gas Electron Multiplier (GEM) telescope is installed along the incoming beamline, and its performance directly impacts the overall efficiency of the experiment. Therefore, a detailed GEM efficiency analysis was carried out to monitor detector performance. This analysis has several applications, including hardware optimization, software parameter optimization, and benchmarking of new software implementations.
This material is based upon work supported by the National Science Foundation under NSF grant PHY-2412757. The MUSE is supported by the Department of Energy, NSF, PSI, and the US-Israel Binational Science Foundation.