A Totally Active Liquid Xenon or Krypton Electromagnetic Calorimeter for High Luminosity Hadron Colliders

1991 ◽  
pp. 9-28
Author(s):  
J. Seguinot ◽  
T. Ypsilantis ◽  
M. Bosteels ◽  
A. Gougas ◽  
G. Passardi ◽  
...  
Keyword(s):  
Electromagnetic Calorimeter ◽  
Liquid Xenon ◽  
Hadron Colliders ◽  
High Luminosity ◽  
Active Liquid

scholarly journals Tracking Triggers for the HL-LHC

2020 ◽  
Vol 70 (1) ◽  
pp. 171-195
Author(s):  
Anders Ryd ◽  
Louise Skinnari
Keyword(s):  
Hadron Colliders ◽  
High Luminosity ◽  
Track Reconstruction ◽  
Cms Experiment ◽  
Expected Performance ◽  
Challenges And Opportunities ◽  
Compare And Contrast

Hardware-based track reconstruction in the CMS and ATLAS trigger systems for the high-luminosity upgrade of the LHC (HL-LHC) will provide unique capabilities. In this review, we present an overview of earlier track trigger systems at hadron colliders, in particular those at the Tevatron CDF and DØ experiments. We discuss the plans of the CMS and ATLAS experiments to implement hardware-based track reconstruction for the HL-LHC. Particular focus is placed on the track trigger capability of the upgraded CMS experiment. We discuss the challenges and opportunities of this novel capability, review the alternatives that were considered for its implementation, and discuss its expected performance. The planned track trigger systems for CMS and ATLAS have different goals, and we compare and contrast the two approaches.

Barium Fluoride Crystals for Future Hadron Colliders

1994 ◽  
Vol 348 ◽  
Author(s):  
Ren-yuan Zhu ◽  
Da-an Ma ◽  
Harvey Newman
Keyword(s):  
Radiation Resistance ◽  
Production Quality ◽  
Barium Fluoride ◽  
Electromagnetic Calorimeter ◽  
Hadron Colliders ◽  
Excellent Candidate ◽  
Current Production ◽  
Fluoride Crystals ◽  
Optical Bleaching

ABSTRACTThis report summarizes the radiation resistance of the current production BaF2 crystals. An approach to implement optical bleaching in situ is also presented. By using optical bleaching current production quality BaF2 crystals could serve as an excellent candidate to construct a precision electromagnetic calorimeter at future hadron colliders.

Optimizing the performance of the CMS Electromagnetic Calorimeter to measure Higgs properties during Phase I and Phase II of the LHC

2020 ◽  
Vol 35 (34n35) ◽  
pp. 2044011
Author(s):  
Amina Zghiche
Keyword(s):  
Energy Calibration ◽  
Electromagnetic Calorimeter ◽  
High Luminosity ◽  
Lead Tungstate ◽  
Decay Channels ◽  
Readout Electronics ◽  
Timing Resolution ◽  
Higgs Decay ◽  
Electron And Photon

The CMS Electromagnetic Calorimeter (ECAL), is a high granularity lead tungstate (PbWO4) crystal calorimeter operating at the CERN LHC. The ECAL performance has been crucial in the discovery and subsequent characterization of the Higgs boson. The original ECAL design considerations, and the improvements to the energy reconstruction and energy calibration algorithms to cope with the LHC Run II are described. For the High-Luminosity LHC (HL-LHC) upgrades to ECAL are necessary. The crystals in the barrel region will be retained, defining the HL-LHC CMS barrel electromagnetic calorimeter ECAL. The readout electronics will be upgraded and operating at lower temperatures, to maintain the required performance of ECAL from 2027 onwards. The new readout electronics, the timing resolution and the electron and photon reconstruction efficiencies and energy resolution expected for HL-LHC are presented. The performance relevant to a number of key Higgs decay channels is reported.

scholarly journals Study of the fast calorimeter prototype for the Super Charm-Tau Factory

2019 ◽  
Vol 212 ◽  
pp. 01007 ◽  
Author(s):  
Ekaterina Prokhorova
Keyword(s):  
Response Time ◽  
Avalanche Photodiodes ◽  
Fast Response ◽  
Electromagnetic Calorimeter ◽  
High Luminosity ◽  
Fast Response Time ◽  
Wavelength Shifter ◽  
Basic Characteristics

Modern e+e− factories with high luminosity require fast response time of the detector subsystems to collect the data efficiently and suppress severe beam background. The prototype of the electromagnetic calorimeter based on the counter made of pure CsI crystal, novel wavelength shifter with nanostructured organosilicon luminophores and avalanche photodiodes Hamamatsu S8664-55 is discussed. Results of the measurement of the basic characteristics of the counter are presented.

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