分类： 物理学 >> 交叉学科物理及相关领域的科学与技术 提交时间： 2024-01-17
摘要： A 20-kiloton liquid scintillator detector is designed in the Jiangmen Underground Neutrino Observatory (JUNO) for multiple physics purposes, including the determination of the neutrino mass ordering through reactor neutrinos, as well as measuring supernova neutrinos, solar neutrinos, and atmosphere neutrinos to explore different physics topics. Efficient reconstruction algorithms are needed to achieve these physics goals in a wide energy range from MeV to GeV. In this paper, we present a novel method for reconstructing the energy of events using hit information from 3-inch photomultiplier tubes (PMTs) and the OCCUPANCY method. Our algorithm exhibits good performance in accurate energy reconstruction, validated with electron Monte Carlo samples spanning kinetic energies from 10~MeV to 1~GeV.
分类： 物理学 >> 核物理学 提交时间： 2016-08-31
Feng-Jiao Luo
Yue-Kun Heng
Zhi-Min Wang
Pei-Liang Wang
Zhong-Hua Qin
2 Mei-Hang Xu
Dong-Hao Liao
Hai-Qiong Zhang
Yong-Bo Huang
Xiang-Cui Lei
Sen Qian
Shu-Lin Liu
Yuan-Bo Chen
Yi-Fang Wang
摘要： The quality of PMT signal is one of the key items for a large and high precision neutrino experiment, like Daya Bay, JUNO, while most of the experiments are affected by the PMT signal overshoot from its positive HV-single cable scheme. For JUNO prototype detector, we have a detailed study on the PMT overshoot and successfully reduced the ratio of overshoot amplitude to signal to ~1% from previous typical ~10%, with no affection to PMT other parameters. Furthermore, we calculated that the overshoot is a result of discharging of capacitors in the HV-signal splitter and the PMT voltage divider. The study result is extremely important for JUNO and other similar experiments.
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