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CATIROC, a Multichannel Front-End ASIC to Read Out the 3″ PMTs (SPMT) System of the JUNO Experiment

  • S. Conforti
  • A. Cabrera
  • C. De La Taille
  • F. Dulucq
  • M. Grassi
  • G. Martin-Chassard
  • A. Noury
  • C. Santos
  • N. Seguin-Moreau
  • M. Settimo
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 212)

Abstract

The ASIC CATIROC (Charge And Time Integrated Read Out Chip) is a complete read-out chip designed to read arrays of 16 photomultipliers (PMTs). It finds a valuable application in the content of the JUNO (Jiangmen Underground Neutrino Observatory) experiment [1], a liquid scintillator antineutrino detector with a double calorimetry system combining about 17k 20″ PMTs (Large PMTs system) and around 25k 3″ PMTs (Small PMTs system). A front-end electronics based on the ASIC CATIROC matches well within the 3″ PMTs system specifications as explained in this paper. CATIROC is a SoC (System on Chip) that processes analog signals up to the digitization to reduce the cost and cables number. The ASIC is composed of 16 independent channels that work in triggerless mode, auto-triggering on the single photo-electron (PE). It provides a charge measurement with a charge resolution of 15 fC and a timing information with a precision of 200 ps rms.

Keywords

Front-end electronics for photomultipliers read-out Multichannel ASIC Analog electronic circuits 

References

  1. 1.
    An, F., JUNO Collaboration (East China U. Sci. Tech., Shanghai) et al.: Neutrino Physics with JUNO, 188 pp. (2015). J. Phys. G43(3), 030401 (2016).  https://doi.org/10.1088/0954-3899/43/3/030401
  2. 2.
    Miao, H.E.: Double calorimetry system in JUNO experiment. In: The Technology and Instrumentation in Particle Physics 2017 (TIPP2017) conference (2017)Google Scholar
  3. 3.
    Conforti, S., et al.: Performance of CATIROC: ASIC for smart readout of large photomultiplier arrays, 2017_JINST_12_C03041 (2017)Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • S. Conforti
    • 2
  • A. Cabrera
    • 1
  • C. De La Taille
    • 2
  • F. Dulucq
    • 2
  • M. Grassi
    • 1
  • G. Martin-Chassard
    • 2
  • A. Noury
    • 1
  • C. Santos
    • 1
  • N. Seguin-Moreau
    • 2
  • M. Settimo
    • 3
  1. 1.Laboratoire d’Astroparticule et Cosmologie (APC)ParisFrance
  2. 2.Organization for Micro-Electronics Design and Applications (OMEGA)Ecole PolytechniquePalaiseauFrance
  3. 3.Laboratoire de physique subatomique et des technologies associées (SUBATECH)NantesFrance

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