2018/02/16 by Florian Michael Pitters, Pitters, Florian
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Instrumentation and Detectors (physics.ins-det) #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #Radiation Detection and Scintillator Technologies
paper · pdf · doi:10.48550/arxiv.1802.05987
openalex publication_date 2018/02/16 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/28
The High Luminosity LHC (HL-LHC) will integrate 10 times more luminosity than\nthe LHC, posing significant challenges for radiation tolerance and event pileup\non detectors, especially for forward calorimetry, and hallmarks the issue for\nfuture colliders. As part of its HL-LHC upgrade program, the CMS collaboration\nis designing a High Granularity Calorimeter to replace the existing endcap\ncalorimeters. It features unprecedented transverse and longitudinal\nsegmentation for both electromagnetic (ECAL) and hadronic (HCAL) compartments.\nThis will facilitate particle-flow calorimetry, where the fine structure of\nshowers can be measured and used to enhance pileup rejection and particle\nidentification, whilst still achieving good energy resolution. The ECAL and a\nlarge fraction of HCAL will be based on hexagonal silicon sensors of 0.5 to 1\ncm2 cell size, with the remainder of the HCAL based on highly-segmented\nscintillators with SiPM readout. The intrinsic high-precision timing\ncapabilities of the silicon sensors will add an extra dimension to event\nreconstruction, especially in terms of pileup rejection. An overview of the\nHGCAL project is presented, covering motivation, engineering design, readout\nand trigger concepts, and expected performance.\n