The Status of the 20 inch MCP-PMT and its APR Test Result

被引：0
|
作者：
Wu, Qi [2 ,3 ]
Qian, Sen [1 ,2 ]
Cao, Yiqi [4 ]
Huang, Guorui [4 ]
Jin, Muchun [4 ]
Jin, Zhen [4 ]
Li, Dong [4 ]
Li, Kun [4 ]
Liu, Shulin [1 ,2 ]
Ma, Lishuang [2 ,5 ]
Ren, Ling [4 ]
Si, Shuguang [4 ]
Sun, Jianning [4 ]
Wang, Xingchao [4 ]
Zhang, Haoda [4 ]
Zhu, Yao [2 ,5 ]
机构：
[1] State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China
[2] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
[3] Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Peoples R China
[4] North Night Vis Tech Ltd, Nanjing 211106, Peoples R China
[5] Harbin Inst Technol, Dept Elect Sci & Technol, Harbin, Peoples R China
来源：
2019 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC) | 2019年
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Researchers at IHEP have conceived a new concept of MCP-PMT several years ago. The small MCP units replace the bulky Dynode chain in the large PMTs. In addition the transmission and reflection photocathode are applied in the same glass bulb to enhance the efficiency of photoelectron conversion. After several years R&D, the 20 inch MCP-PMT was successfully produced for JUNO. From 2017 to 2020, all the 20-inch PMTs for JUNO have been under production and testing in NNVT. Furthermore, the QE of this type of MCP-PMT is improved from 28% to 34%@400nm in 2018, and this new technology has already been used on the PMT mass production. The after-pulse rate of this type of the HQE-MCP-PMT was also evaluated at gain similar to 1.0x10(7) in this manuscript.
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页数：4
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