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Published November 2016 | public
Book Section - Chapter

Comparative Test Beam Studies of Precision Timing Calorimeter Technologies


Current and future high energy physics particle colliders are capable to provide instantaneous luminosities of 10^(34) cm^(-2) s^(-1) and above. The high center of mass energy, the large number of simultaneous collision of beam particles in the experiments and the very high repetition rates of the collision events pose huge challenges. They result in extremely high particle fluxes, causing very high occupancies in the particle physics detectors operating at these machines. To reconstruct the physics events, the detectors have to make as much information as possible available on the final state particles. We discuss different detector concepts which can provide time measurements for charged particles and photons with a precision in the range of a few 10 ps. We present in detail measurements utilizing Lutetiumyttrium oxyorthosilicate (LYSO) based calorimeter prototype. With an improved understanding of the signal creation, light propagation and detection characteristics we achieve a precision of down to 30 ps for electrons with energies of 30 GeV. Further we present beam test measurements with a multichannel plate based detectors and studies using semi-conductor based detectors. We discuss possible implementations based on these different technologies in a large scale particle physics detector for the high luminosity LHC (HL-LHC).

Additional Information

© 2016 IEEE. All the authors but three are with the Department of Physics, California Institute of Technology, Pasadena, CA 91125 USA, e-mail: (bornheim@caltech.edu). A. Ronzhin and S. Los are with the Fermi National Accelerator Laboratory PO Box 500 Batavia, IL 60510-5011 USA. M. Hassanshahi is with School of Particles and Accelerators, Institute for Research in Fundamental Sciences (IPM) P.O. Box 19395-5531, Tehran, Iran. We would like to thank the CERN and FNAL test beam facilities for providing us with superb particle beams. This work is supported by funding from Fermi Research Alliance, LLC under Contract no. DE-AC02-07CH11359 with the United States Department of Energy and from California Institute of Technology High Energy Physics under Contract DESC0011925 with the United States Department of Energy.

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October 18, 2023