机构地区:[1]Yerevan Physics Institute,Yerevan,Armenia [2]Université Libre de Bruxelles,Brussels,Belgium [3]Universidade Estadual de Londrina,Londrina,Brazil [4]Pontificia Universidade Catolica do Rio de Janeiro,Rio de Janeiro,Brazil [5]Millennium Institute for SubAtomic Physics at the High-energy Frontier(SAPHIR),ANID,Chile [6]Pontificia Universidad Católica de Chile,Santiago,Chile [7]Beijing Institute of Spacecraft Environment Engineering,Beijing,China [8]Beijing Normal University,Beijing,China [9]China Institute of Atomic Energy,Beijing,China [10]Institute of High Energy Physics,Beijing,China [11]North China Electric Power University,Beijing,China [12]School of Physics,Peking University,Beijing,China [13]Tsinghua University,Beijing,China [14]University of Chinese Academy of Sciences,Beijing,China [15]Jilin University,Changchun,China [16]College of Electronic Science and Engineering,National University of Defense Technology,Changsha,China [17]Chongqing University,Chongqing,China [18]Dongguan University of Technology,Dongguan,China [19]Jinan University,Guangzhou,China [20]Sun Yat-sen University,Guangzhou,China [21]Harbin Institute of Technology,Harbin,China [22]University of Science and Technology of China,Hefei,China [23]The Radiochemistry and Nuclear Chemistry Group in University of South China,Hengyang,China [24]Wuyi University,Jiangmen,China [25]Shandong University,Jinan,China,and Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education,Shandong University,Qingdao,China [26]Nanjing University,Nanjing,China [27]Guangxi University,Nanning,China [28]East China University of Science and Technology,Shanghai,China [29]School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai,China [30]Tsung-Dao Lee Institute,Shanghai Jiao Tong University,Shanghai,China [31]Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences,Shijiazhuang,China [32]Nankai University,Tianjin,China [33]Wuhan University,Wuhan,China [34]Xi'an Jiaotong University,Xi'an,China [35]Xiam
出 处:《Chinese Physics C》2025年第1期35-59,共25页中国物理C(英文版)
基 金:Supported by the Chinese Academy of Sciences;the National Key R&D Program of China;the CAS Center for Excellence in Particle Physics,Wuyi University;the Tsung-Dao Lee Institute of Shanghai Jiao Tong University in China;the Institut National de Physique Nucléaire et de Physique de Particules(IN2P3)in France;the Istituto Nazionale di Fisica Nucleare(INFN)in Italy;the Italian-Chinese collaborative research program MAECI-NSFC;the Fond de la Recherche Scientifique(F.R.S-FNRS);FWO under the"Excellence of Science-EOS"in Belgium;the Conselho Nacional de Desenvolvimento Científico e Tecnològico in Brazil;the Agencia Nacional de Investigacion y Desarrollo and ANID Millennium Science Initiative Program—ICN2019_044 in Chile;the Charles University Research Centre and the Ministry of Education,Youth,and Sports in Czech Republic;the Deutsche Forschungsgemeinschaft(DFG);the Helmholtz Association;the Cluster of Excellence PRISMA+in Germany;the Joint Institute of Nuclear Research(JINR);Lomonosov Moscow State University in Russia;the joint Russian Science Foundation(RSF);National Natural Science Foundation of China(NSFC)research program;the MOST and MOE in Taiwan,China;the Chulalongkorn University and Suranaree University of Technology in Thailand;the University of California at Irvine;the National Science Foundation in USA。
摘 要:This paper presents an energy resolution study of the JUNO experiment,incorporating the latest knowledge acquired during the detector construction phase.The determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 MeV.To achieve this ambitious goal,significant efforts have been undertaken in the design and production of the key components of the JUNO detector.Various factors affecting the detection of inverse beta decay signals have an impact on the energy resolution,extending beyond the statistical fluctuations of the detected number of photons,such as the properties of the liquid scintillator,performance of photomultiplier tubes,and the energy reconstruction algorithm.To account for these effects,a full JUNO simulation and reconstruction approach is employed.This enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy resolution.The results of this study reveal an energy resolution of 2.95% at 1 Mev.Furthermore,this study assesses the contribution of major effects to the overall energy resolution budget.This analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data collection.Moreover,it provides a guideline for comprehending the energy resolution characteristics of liquid scintillator-based detectors.
关 键 词:energy resolution liquid scintillator detector JUNO SIMULATION RECONSTRUCTION
分 类 号:O572.321[理学—粒子物理与原子核物理]
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