Evaluation of new large area PMT with high quantum efficiency

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Xiang-Cui Lei, Yue-Kun Heng, Sen Qian, Jing-Kai Xia, Shu-Lin Liu, Zhi Wu, Bao-Jun Yan, Mei-Hang Xu, Zheng Wang, Xiao-Nan Li, Xiang-Dong Ruan, Xiao-Zhuang Wang, Yu-Zhen Yang, Wen-Wen Wang, Can Fang, Feng-Jiao Luo, Jing-Jing Liang, Lu-Ping Yang and Biao Yang. Evaluation of new large area PMT with high quantum efficiency[J]. Chinese Physics C, 2016, 40(2): 026002. doi: 10.1088/1674-1137/40/2/026002
Xiang-Cui Lei, Yue-Kun Heng, Sen Qian, Jing-Kai Xia, Shu-Lin Liu, Zhi Wu, Bao-Jun Yan, Mei-Hang Xu, Zheng Wang, Xiao-Nan Li, Xiang-Dong Ruan, Xiao-Zhuang Wang, Yu-Zhen Yang, Wen-Wen Wang, Can Fang, Feng-Jiao Luo, Jing-Jing Liang, Lu-Ping Yang and Biao Yang. Evaluation of new large area PMT with high quantum efficiency[J]. Chinese Physics C, 2016, 40(2): 026002.  doi: 10.1088/1674-1137/40/2/026002 shu
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Received: 2015-04-17
Revised: 2015-08-31
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    Supported by Strategic Priority Research Program of Chinese Academy of Sciences (X-DA10010200), Key Deployment Project of Chinese Academy of Sciences and CAS Center for Excellence in Particle Physics (CCEPP)

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Evaluation of new large area PMT with high quantum efficiency

    Corresponding author: Xiang-Cui Lei,
    Corresponding author: Yue-Kun Heng,
  • 1. State Key Laboratory of Particle Detection and Electronics, Beijing 100049, China
  • 2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 3. University of Chinese Academy of Sciences, Beijing 100049, China
  • 4.  Guangxi University, Nanning 530004, China
  • 5. University of Science and Technology of China, Hefei 230026, China
  • 6. Nanjing University, Nanjing 200093, China
  • 7. Guangxi University, Nanning 530004, China
  • 8. Henan University, Kaifeng 475001, China
Fund Project:  Supported by Strategic Priority Research Program of Chinese Academy of Sciences (X-DA10010200), Key Deployment Project of Chinese Academy of Sciences and CAS Center for Excellence in Particle Physics (CCEPP)

Abstract: The neutrino detector of the Jiangmen Underground Neutrino Observatory (JUNO) is designed to use 20 kilotons of liquid scintillator and approximately 16 000 20 inch photomultipliers (PMTs). One of the options is to use the 20 inch R12860 PMT with high quantum efficiency which has recently been developed by Hamamatsu Photonics. The performance of the newly developed PMT preproduction samples is evaluated. The results show that its quantum efficiency is 30% at 400 nm. Its Peak/Valley (P/V) ratio for the single photoelectron is 4.75 and the dark count rate is 27 kHz at the threshold of 3 mV while the gain is at 1×107. The transit time spread of a single photoelectron is 2.86 ns. Generally the performances of this new 20 inch PMT are improved over the old one of R3600.

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