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PKU HEP Seminar and Workshop (北京大学高能物理组)

HGCAL: CMS Endcap Calorimeter Upgrade for the HL-LHC Era

by Dr Karl A. Gill (CERN)

Asia/Shanghai
B105 (CHEP)

B105

CHEP

West Building, School of Physics, PKU
Description
Advances in large-area highly-segmented detectors based on silicon and scintillators provide possibilities of high-granularity calorimetry in the Phase 2 CMS experiment upgrade. The HGCAL is a sampling calorimeter that will replace the existing endcap calorimeters of CMS. It features unprecedented transverse and longitudinal readout segmentation for both electromagnetic (CE-E) and hadronic (CE-H) compartments. This will facilitate particle-flow calorimetry, where the fine structure of showers can be measured and used to enhance pileup rejection and particle identification, whilst still achieving good energy resolution. The CE-E and a large fraction of CE-H will use silicon as active detector material: the sensors will hexagonal, maximizing the available 8-inch circular wafer area. The lower-radiation environment of the CE-H can be instrumented with scintillator tiles with on-tile SiPM readout. This concept borrows heavily from designs produced by the CALICE collaboration - calorimetry for CLIC and ILC etc. - but the challenges of such a detector at a hadron collider are considerably larger than at the ILC. In addition to the hardware aspects, the reconstruction of signals - both online for triggering and offline - is a quantum leap from existing detectors. We present the reasoning and ideas behind the HGCAL, its current status including design and expected performance, and the challenges ahead. 简历:CERN staff since 1998, CERN Fellow 1996-98. PhD and Postdoc Imperial College London, High Energy Physics 1990-95. CMS collaborator since the Letter of Intent in 1992. Contributed to the CMS Tracker in all phases from R&D, through construction, operation, onto the Phase 1 and Phase 2 upgrades; 10+ years R&D experience on radiation damage effects on silicon sensors, optoelectronics, and fibre optics; 10+ years experience in Project Management and Technical Coordination of the CMS Tracker Operations and Upgrades, moving onto HGCAL in 2017.
Participants
  • Bin Li
  • Congqiao Li
  • Guojin Tseng
  • Jiao Zhang
  • JUNHO LEE
  • Katsuya Hashino
  • ning chen
  • Qiang Li
  • Rui Zhang
  • Tansheng Cheng
  • Yu-Jie Zhang
  • 喆 关
  • 安康 魏
  • 昊 ZHANG
  • 李林 杨
  • 楚翘 蒋
  • 浩然 蒋
  • 靖 彭