PoS - Proceedings of Science
Volume 398 - The European Physical Society Conference on High Energy Physics (EPS-HEP2021) - T12: Detector R&D and Data Handling
Triggering on electrons, photons, tau leptons, jets and energy sums at HL-LHC with the upgraded CMS Level-1 Trigger
P. Das
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From the year 2026 onwards, the LHC experiments will operate in the high-luminosity mode (HL-LHC) with 5-7.5 times the current instantaneous luminosity. The Phase-2 upgrade of the Compact Muon Solenoid (CMS) detector aims to mitigate degradation in detector performance and high pile-up rates, about 140-200 per event, due to increase in luminosity. The upgrade of the Level-1 (L1) trigger system will include tracking information and subdetector upgrades leading to higher granularity and precision timing information. An overview of the electrons, photons, jets, hadronic taus and energy sums trigger algorithms for the upgraded L1 system is presented, along with their expected performance studied using simulated collision data of the HL-LHC.
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