Design of hadronic calorimeter for DarkSHINE experiment  

作　　者：Zhen Wang Rui Yuan Han-Qing Liu Jing Chen Xiang Chen Kim Siang Khaw Liang Li Shu Li Kun Liu Qi-Bin Liu Si-Yuan Song Tong Sun Xiao-Long Wang Yu-Feng Wang Hai-Jun Yang Jun-Hua Zhang Yu-Lei Zhang Zhi-Yu Zhao Chun-Xiang Zhu Xu-Liang Zhu Yi-Fan Zhu 

机构地区：[1]Tsung-Dao Lee Institute,Shanghai Jiao Tong University,1 Lisuo Road,Shanghai 201210,China [2]Institute of Nuclear and Particle Physics,School of Physics and Astronomy,800 Dongchuan Road,Shanghai 200240,China [3]Key Laboratory for Particle Astrophysics and Cosmology(MOE),Shanghai Key Laboratory for Particle Physics and Cosmology(SKLPPC),Shanghai Jiao Tong University,800 Dongchuan Road,Shanghai 200240,China [4]Key Laboratory of Nuclear Physics and Ion-beam Application(MOE),Fudan University,Shanghai 200443,China [5]Institute of Modern Physics,Fudan University,Shanghai 200443,China

出　　处：《Nuclear Science and Techniques》2024年第9期155-167,共13页核技术（英文）

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).

摘　　要：The sensitivity of the dark photon search through invisible decay final states in low-background experiments relies sig-nificantly on the neutron and muon veto efficiencies,which depend on the amount of material used and the design of the detector geometry.This paper presents the optimized design of the hadronic calorimeter(HCAL)used in the DarkSHINE experiment,which is studied using a GEANT4-based simulation framework.The geometry is optimized by comparing a traditional design with uniform absorbers to one that uses different thicknesses at different locations on the detector,which enhances the efficiency of vetoing low-energy neutrons at the sub-GeV level.The overall size and total amount of material used in the HCAL are optimized to be lower,owing to the load and budget requirements,whereas the overall performance is studied to satisfy the physical objectives.

关 键 词：Hadronic calorimeter GEANT4 simulation Neutron background Scintillation detector Dark photon 

分 类 号：P159[天文地球—天文学]