Muon energy reconstruction in the high-energy neutrino observations  

作　　者：Ying Qi Jiali Liu Maoyuan Liu Mingjun Chen Zike Wang Tianqi Huang Peiyuan Chu 

机构地区：[1]College of Science,Tibet University,Lhasa 850000,China [2]Key Laboratory of Cosmic Rays,Ministry of Education,Tibet University,Lhasa 850000,China [3]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [4]Tianfu Cosmic Ray Research Center,Chengdu 610000,China [5]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Astronomical Techniques and Instruments》2024年第3期197-202,共6页天文技术与仪器（英文）

基　　金：supported by Institute of High Energy Physics (E25156U110);the Sichuan Department of Science and Technology (2023YFSY0014).

摘　　要：The reconstruction of muon energies is crucial for the data analysis of neutrino experiments using large water Cherenkov detectors,but the resolution for muon energy reconstruction using traditional methods is poor.Here,we propose a revised approach to remove noisy optical modules along the track produced by the propagation of muons through water.The number of photons on the optical modules is first corrected by the attenuation properties of light in water.Then the difference in time between the observed optical modules and the expected ones is determined based on the geometry of the triggered optical modules.Finally,the standard of correction is measured by the ratio of photon number before and after correction.Optical modules selection conditions were optimized according to these parameters,with most noisy optical modules successfully removed,improving the resolution of muon energy reconstruction.

关 键 词：dE/dx detectors Neutrino detectors Data processing 

分 类 号：P172.4[天文地球—天文学]