Proton and muon beam tests for ultra-fast MCP-PMT detectors

被引:0
|
作者
Wu, Qi [1 ,2 ]
Hu, Peng [1 ]
Ma, Lishuang [1 ]
Zhang, Yaopeng [3 ]
Qian, Sen [1 ]
Hua, Zhehao [1 ]
Chen, Lingyue [1 ,2 ]
Ye, Zhihong [3 ]
Ye, Zhenyu [4 ]
机构
[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
[2] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
[3] Tsinghua Univ, Beijing 100084, Peoples R China
[4] Univ Illinois, Chicago, IL 60607 USA
来源
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2024年 / 1064卷
关键词
MCP-PMT; Beam test; Coincidence time resolution;
D O I
10.1016/j.nima.2024.169373
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
In collaboration with the North Night Vision Science and Technology (Nanjing) Research Institute Co. Ltd, researchers at the Institute of High Energy of Physics in China have successfully developed the 20-inch micro-channel-plate photomultiplier tube (MCP-PMT) that exhibits high detection efficiency (DE) for use in the Jiangmen Underground Neutrino Observatory (JUNO). Due to the long drift path of electrons from photocathode to MCP, the 20-inch MCP-PMT has a time resolution on the order of nanoseconds. Recently, the team has made advancements in ultra-fast MCP-PMTs (FPMTs), achieving picosecond-level time resolution with both 1-inch and 2-inch types. By now, prototypes featuring single-anode, 2 x 2 anodes, 4 x 4 anodes, and 8 x 8 anodes have been successfully manufactured and tested. The 8 x 8 anode FPMT, in particular, demonstrates a transit time spread (TTS) of 36 ps (Sigma) in single photon mode, thanks to its meticulously engineered structure. To assess the FPMT's time performance under beam conditions, two beam tests were conducted at Fermi Lab and CERN. In these tests, the 8 x 8 pixel arrays of four distinct radiators, including LYSO, BGO, Pb glass and quartz glass, were paired with the 8 x 8 anodes FPMT. This setup involved the use of two radiator-coupled FPMT detectors for particle detection. The best coincidence time resolution recorded was 64 ps (Sigma) with a 120 GeV proton beam and 56 ps (Sigma) with a 108 GeV muon beam.
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页数:4
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