Abstract
Particle detectors with a timing resolution of order 10 ps can improve event reconstruction at high-luminosity hadron colliders tremendously. The upgrade of the Compact Muon Solenoid (CMS) crystal electromagnetic calorimeter (ECAL), which will operate at the High-Luminosity Large Hadron Collider (HL-LHC), will achieve a timing resolution of around 30 ps for high-energy photons and electrons. The benefits of precision timing for the ECAL event reconstruction at HL-LHC will be discussed in this presentation. Simulation and test beam studies carried out for the timing upgrade of the CMS ECAL will be presented and the prospects for a full implementation of this option will be discussed.
Highlights
The Compact Muon Solenoid (CMS) [1] is a general purpose experiment, whose physics program ranges from the study of the Standard Model (SM) to the investigation of beyond Standard Model (BSM) theories, exploiting the proton-proton collisions delivered by the Large Hadron Collider (LHC) [2] at CERN
In situ measurement The electromagnetic calorimeter (ECAL) time resolution has been measured in situ, with proton-proton collisions delivered by the LHC [7]
Summary The timing capability of the CMS ECAL has been measured with high energy electrons and photons during either test beam campaigns or in situ, with proton-proton collisions delivered by the LHC
Summary
The Compact Muon Solenoid (CMS) [1] is a general purpose experiment, whose physics program ranges from the study of the Standard Model (SM) to the investigation of beyond Standard Model (BSM) theories, exploiting the proton-proton collisions delivered by the Large Hadron Collider (LHC) [2] at CERN.The CMS electromagnetic calorimeter (ECAL) [3], located inside the 3.8 T superconducting solenoid, was designed to measure the energies of electrons and photons with high precision (better than 1% for photons with 60 GeV energy). The upgrade of the Compact Muon Solenoid (CMS) crystal electromagnetic calorimeter (ECAL), which will operate at the High-Luminosity Large Hadron Collider (HL-LHC), will achieve a timing resolution of around 30 ps for high-energy photons and electrons.
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