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Characterisation of Hamamatsu Silicon Photomultiplier Arrays for the LHCb Scintillating Fibre Tracker Upgrade

  • Axel Kuonen
  • Guido Haefeli
  • Olivier Girard
  • Maria Elena Stramaglia
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 213)

Abstract

In the context of the LHCb detector upgrade, during the long shutdown of LHC (2019/2020), the complete tracking system will be replaced to cope with the increased luminosity and trigger less readout scheme. A large area (300 \(\mathrm {m^2}\)) scintillating fibre tracker (SciFi) with more than 500 K channels and 250 \(\upmu \)m readout pitch is under construction. The silicon photomultiplier used for the read-out provide high photon detection efficiency, low correlated noise (optical cross-talk and after-pulse), short recovery time and withstand a high neutron fluence. The Hamamatsu photo-detectors selected in November 2016 have been characterised before and after irradiation with neutrons and protons. We will focus on the study of the performance of these devices in the context of the LHCb SciFi application regarding the single photon detection capability after irradiation. New developed characterisation method will also be presented.

Keywords

LHCb Scintillating fiber tracker SiPM Hamamatsu 

References

  1. 1.
    LHCb Collaboration, LHCb Tracker Upgrade Technical Design Report. CERN, Geneva (2014)Google Scholar
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    Joram, C., Haefeli, G., Leverington, B.: Scintillating fibre tracking at high luminosity colliders. J. Instrum. 2015 JINST 10, C08005, 6 (2015)Google Scholar
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    Kuonen, A.: Characterisation of Hamamatsu silicon photomultiplier arrays for the LHCb Scintillating Fibre Tracker Upgrade. LHCb-TALK-2017-151, May 2017Google Scholar
  4. 4.
    Mazorra, J., Chanal, H., Comerma, A., Gascón, D., Gómez, S., Han, X., Pillet, N., Vandaele, N.: PACIFIC: the readout ASIC for the SciFi Tracker of the upgraded LHCb detector. JINST 11, C02021, 8 (2016)Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd.  2018

Authors and Affiliations

  • Axel Kuonen
    • 1
  • Guido Haefeli
    • 1
  • Olivier Girard
    • 1
  • Maria Elena Stramaglia
    • 1
  1. 1.Ecole Polytechnique Fédérale Lausanne, EPFLLausanneSwitzerland

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