Design optimization of plastic scintillators with wavelength-shifting fibers and silicon photomultiplier readouts in the top veto tracker of the JUNO-TAO experiment  

作　　者：Guang Luo Y.K.Hor Pei-Zhi Lu Zhi-Min Wang Ru-Hui Li Min Li Yi-Chen Li Liang Zhan Wei Wang Yue-Huan Wei Yu Chen Xiang Xiao Feng-Peng An 

机构地区：[1]School of Physics,Sun Yat-sen University,Guangzhou 510275,China [2]Institute of High Energy Physics,Beijing 100049,Chin [3]a 3 University of Chinese Academy of Sciences,Beijing 100049,China [4]Sino-French Institute of Nuclear Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,China

出　　处：《Nuclear Science and Techniques》2023年第7期99-112,共14页核技术（英文）

基　　金：supported by the School of Physics at Sun Yat-sen University,China

摘　　要：Plastic scintillators(PSs)embedded with wavelength-shifting fibers are widely used in high-energy particle physics,such as in muon taggers,as well as in medical physics and other applications.In this study,a simulation package was built to evaluate the effects of the diameter and layout of optical fibers on the light yield with different configurations.The optimal optical configuration was designed based on simulations and validated using two PS prototypes under certain experimental condi-tions.A top veto tracker(TVT)for the JUNO-TAO experiment,comprising four layers of 160 strips of PS,was designed and evaluated.The threshold was evaluated when the muon tagging efficiency of a PS strip was>99%.The efficiency of three layer out of four layer of TVT is>99%,even with a tagging efficiency of a single strip as low as 97%,using a threshold of 10 photoelectrons and assuming a 40%silicon PM photon detection efficiency.

关 键 词：Plastic scintillator WLS fiber Light yield Optical transmission performance Muon tagging efficiency JUNO-TAO 

分 类 号：TL812[核科学技术—核技术及应用] TN253[电子电信—物理电子学]