摘要: 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�0%燼t�00nm. Its Peak/Valley (P/V) ratio for the single photoelectron is 4.75 and the dark count rate is�7kHz燼t the threshold of 3 mV while the gain is at��07. The transit time spread of a single photoelectron is2.86ns. Generally the performances of this new 20-inch PMT are improved over the old one of R3600.
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分类:
物理学
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核物理学
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引用:
ChinaXiv:201609.00908
(或此版本
ChinaXiv:201609.00908V1)
doi:10.12074/201609.00908
CSTR:32003.36.ChinaXiv.201609.00908.V1
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LEI Xiang-Cui,HENG Yue-Kun,QIAN Sen,XIA Jing-Kai,LIU Shu-Lin,WU Zhi,YAN Bao-Jun,XU Mei-Hang,WANG Zheng LI Xiao-Nan,RUAN Xiang-Dong,Wang Xiao-Zhuang,YANG Yu-Zhen,WANG Wen-Wen,FANG Can,LUO Feng-Jiao,LIANG Jing-Jing 1,4 YANG Lu-Ping 1,7 YANG Biao 1,2.(2016).Evaluation of new large area PMT with high quantum efficiency.中国科学院科技论文预发布平台.[ChinaXiv:201609.00908]
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