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Characterization of 3-inch photomultiplier tubes for the JUNO central detector

  • Nan Li
  • Yue-kun HengEmail author
  • Miao HeEmail author
  • Ji-lei Xu
  • Xuan-tong Zhang
  • Chuan-ya Cao
  • Zhi Wu
  • Feng-jiao Luo
  • Zhi-min Wang
  • Xiao-yu Yang
  • Mei-hang Xu
  • Zhong-hua Qin
  • Yu-zhen Yang
  • Bao-jun Yan
  • Shu-lin Liu
Original Paper
  • 100 Downloads

Abstract

Background

Jiangmen Underground Neutrino Observation (JUNO) is one of the largest experimental facilities for neutrino detecting. As its main structure, the central detector contains 20 kiloton liquid scintillator filled in an acrylic shell, and there are 18,000 20-inch photomultiplier tubes (PMTs) and 25,000 3-inch PMTs covering the shell.

Purpose

As an independent photon detection system, 3-inch PMTs have been required to have excellent resolution for the single photoelectron detection, high quantum efficiency, small transit time spread and low dark noise rate.

Methods

Two kinds of 3-inch PMTs from HZC Photonics and Hamamatsu have been investigated as candidates. A dedicated test system for 3-inch PMTs has been designed, and various characterization parameters have been studied.

Conclusion

The preliminary results show these PMTs can meet the requirements of JUNO.

Keywords

PMT JUNO SPE Quantum efficiency Transit time spread Dark noise 

Notes

Acknowledgements

This work is supported by the Strategic Priority Research Program of the Chinese Academy of Sciences, Grant No. XDA10011200.

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Copyright information

© Institute of High Energy Physics, Chinese Academy of Sciences; Nuclear Electronics and Nuclear Detection Society and Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Nan Li
    • 1
    • 2
    • 3
  • Yue-kun Heng
    • 1
    • 2
    • 3
    Email author
  • Miao He
    • 2
    Email author
  • Ji-lei Xu
    • 2
  • Xuan-tong Zhang
    • 2
    • 3
  • Chuan-ya Cao
    • 2
    • 3
  • Zhi Wu
    • 1
    • 2
  • Feng-jiao Luo
    • 1
    • 2
    • 3
  • Zhi-min Wang
    • 2
  • Xiao-yu Yang
    • 1
    • 2
  • Mei-hang Xu
    • 1
    • 2
  • Zhong-hua Qin
    • 1
    • 2
  • Yu-zhen Yang
    • 1
    • 2
  • Bao-jun Yan
    • 1
    • 2
  • Shu-lin Liu
    • 1
    • 2
  1. 1.State Key Laboratory of Particle Detection and ElectronicsBeijingChina
  2. 2.Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina
  3. 3.University of Chinese Academy of ScienceBeijingChina

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