| CMS Note | |
| Report number | CMS-CR-2026-054 |
| Title | Background Particle Response of CMS GEM Detectors with Run 3 Data and Simulation |
| Author(s) | Sheokand, Tanvi (Panjab U.) |
| Publication | 2026 |
| Collaboration | CMS Collaboration |
| Imprint | 28 Apr 2026 |
| Number of pages | 5 |
| Presented at | 7th International Conference on Technology and Instrumentation for Particle Physics, Mumbai, In, 2 - 6 Feb 2026 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN LHC ; CMS |
| Keywords | General |
| Abstract | The upgrade of the High-Luminosity LHC (HL-LHC) will boost the instantaneous luminosity to 5-7 $\times$ 10$^{34}$ cm$^{-2}$s$^{-1}$, increasing particle fluxes in the forward region of the CMS detector. High particle fluxes can damage electronics and induce spurious signals. This study focuses on the GE1/1 triple-GEM detector's sensitivity to both neutral and charged background particles, performed using FLUKA and GEANT4 simulations. FLUKA provides a comprehensive description of the radiation field around the GE1/1 chambers across a broad energy spectrum. GEANT4 delivers complementary insight into the detector response based on realistic geometry, materials, and interaction processes. The results show how the detector's sensitivity changes with particle energy and incident angle, and how different configurations affect its performance. The article also includes comparisons with CMS Run 3 data, providing valuable guidance for optimizing GEM operation under HL-LHC conditions. This approach can be extended to other forward detectors like ME0 during the HL-LHC era. |
Record created 2026-05-20, last modified 2026-05-20
