Design of a LYSO crystal electromagnetic calorimeter for dark photon detection in the DarkSHINE experiment

作     者：Zhi-Yu Zhao Qi-Bin Liu Ji-Yuan Chen Jing Chen Jun-Feng Chen Xiang Chen Chang-Bo Fu Jun Guo Kim Siang Khaw Liang Li Shu Li Dan-Ning Liu Kun Liu Si-Yuan Song Tong Sun Jian-Nan Tang Yu-Feng Wang Zhen Wang Wei-Hao Wu Hai-Jun Yang Yu-Ming Lin Rui Yuan Yu-Lei Zhang Yun-Long Zhang Bai-Hong Zhou Xu-Liang Zhu Yi-Fan Zhu 

作者机构：Tsung-Dao Lee InstituteShanghai Jiao Tong University1 Lisuo RoadShanghai 201210China Institute of Nuclear and Particle PhysicsSchool of Physics and Astronomy800 Dongchuan RoadShanghai 200240China Key Laboratory for Particle Astrophysics and Cosmology(MOE)Shanghai Key Laboratory for Particle Physics and Cosmology(SKLPPC)Shanghai Jiao Tong University800 Dongchuan RoadShanghai 200240China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE)Fudan UniversityShanghai 200443China Institute of Modern PhysicsFudan UniversityShanghai 200443China State Key Laboratory of Particle Detection and ElectronicsUniversity of Science and Technology of ChinaHefei 230026China Department of Modern PhysicsUniversity of Science and Technology of ChinaHefei 230026China 

出 版 物：《Nuclear Science and Techniques》 (核技术(英文))

年 卷 期：2025年第36卷第3期

页      面：69-84页

核心收录：

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 National Key R&D Program of China(Nos.2023YFA1606904 and 2023YFA1606900) National Natural Science Foundation of China(No.12150006) Shanghai Pilot Program for Basic Research-Shanghai Jiao Tong University(No.21TQ1400209) National Center for High-Level Talent Training in Mathematics,Physics,Chemistry,and Biology 

主　　题：Electromagnetic calorimeter LYSO Scintillator detector Light dark matter Dark photon 

摘      要：This paper presents the design and optimization of a lutetium yttrium oxyorthosilicate(LYSO)crystal electromagnetic calorimeter(ECAL)for the DarkSHINE experiment,which aims to identify dark photons as potential mediators of dark *** ECAL design was evaluated through comprehensive simulations,focusing on optimizing dimensions,material selection,energy distribution,and energy *** configuration consisted of 21×21×11 LYSO crystals,each measuring 2.5 cm×2.5 cm×4 cm,arranged in a staggered layout to enhance signal detection efficiency.A 4 GeV energy dynamic range was established to ensure accurate energy measurements without saturation,which is essential for background rejection and signal identification.A detailed digitization model was developed to simulate scintillation,silicon photomultiplier,and analog-to-digital converter behaviors,providing a realistic representation of the detector s ***,the study assessed radiation damage in the ECAL region,emphasizing the importance of using radiation-resistant scintillators and silicon sensors.