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Paper detail

Afterpulse measurement of JUNO 20-inch PMTs

In this article we present the large photo-multiplier tube (PMT) afterpulse measurement results of Jiangmen Underground Neutrino Observatory (JUNO) experiment. Totally 11 dynode-PMTs (R12860) from Hamamatsu company and 150 micro-channel plate PMTs (MCP-PMTs, GDB-6201) from NNVT company were tested, an afterpulse model is built according to the afterpulse time distribution and probability of occurrence for these two types of PMTs. The average ratio between the total afterpulse charge with the delay between 0.5 $μ$ s and 20 $μ$ s to the primary pulse charge is 5.6%(13.2%) for the tested MCP-PMTs (dynode-PMTs). JUNO experiment will deploy 20,012 20-inch PMTs, and this study will benefit the detector simulation, event reconstruction and data analysis of JUNO experiment.

preprint2022arXivOpen access
Rong ZhaoNikolay AnfimovYu ChenHang HuJun HuXiaolu JiDenis KorablevMin LiAlexander OlshevskiyZhaoyuan PengArseny RybnikovZhonghua QinJun WangWei WangZhimin WangBjörn Wonsak
hep-exphysics.ins-det
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Authors

Rong ZhaoNikolay AnfimovYu ChenHang HuJun HuXiaolu JiDenis KorablevMin LiAlexander OlshevskiyZhaoyuan PengArseny RybnikovZhonghua QinJun WangWei WangZhimin WangBjörn Wonsak

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