分类： 物理学 >> 核物理学 提交时间： 2016-09-13
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
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.
提交时间： 2017-04-06
摘要： Two blue fluorescent emitters were utilized to construct simplified organic light-emitting diodes (OLEDs) and the remarkable difference in device performance was carefully illustrated. A maximum current efficiency of 4.84 cd A(-1) (corresponding to a quan
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