Improving the energy resolution of the reactor antineutrino energy reconstruction with positron direction
作者机构：Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of SciencesBeijing 100049China Nanjing UniversityNanjing 210093China
出 版 物：《Radiation Detection Technology and Methods》 (辐射探测技术与方法（英文）)
年 卷 期：2020年第4卷第3期
页 面：356-361页
学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学]
基 金：supported by the Youth Innovation Promotion Association CAS the National Natural Science Foundation of China under Grant No.11775247 the National Key R&D Pro-gram of China under Grant No.2018YFA0404100
主 题：Energy resolution Neutron recoiling Positron direction reconstruction Cerenkov
摘 要：Purpose Improving the energy resolution of the reactor antineutrino energy *** Simulate the energy resolution of a liquid scintillator detector and reconstruct the antineutrino energy with the positron scattering angle,a simple positron direction reconstruction method is implemented in a toy liquid scintillator detector like the Taishan Antineutrino Observatory(TAO)with 4500 photoelectron yield per *** A 4%to 26%improvement of energy resolution can be achieved for 5 MeV reactor antineutrinos at *** The emission direction of the produced positron in IBD reaction can be used to estimate the kinetic energy of neutron and thus the reconstructed antineutrino energy resolution can be improved.
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