Performance of plastic scintillator modules for top veto tracker at Taishan Antineutrino Observatory  

作　　者：Guang Luo Xiao-Hao Yin Feng-Peng An Zhi-Min Wang YKHor Pei-Zhi Lu Ru-Hui Li Yi-Chen Li Wei He Wei Wang Xiang Xiao 

机构地区：[1]School of Science,Sun Yat-sen University,Shenzhen 518107,China [2]School of Physics,Sun Yat-sen University,Guangzhou 510275,China [3]Institute of High Energy Physics,Beijing 100049,China [4]University of Chinese Academy of Sciences,Beijing 100049,China [5]Sino-French Institute of Nuclear Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,China

出　　处：《Nuclear Science and Techniques》2025年第5期140-151,共12页核技术(英文)

基　　金：supported by the General Program of the National Natural Science Foundation of China(No.12075087);National Key Research and Development Program of China(No.2022YFA1602002);Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA10011102);support from the Guangdong Provincial Key Laboratory of Advanced Particle Detection Technology。

摘　　要：The Taishan Antineutrino Observatory(TAO)experiment features a top veto tracker system comprising 160 modules,each constructed from plastic scintillator(PS)strips,embedded wavelength shifting fibers(WLS-fibers),and silicon photomultipliers.This article reports on the performance of all produced modules,focusing on the production and readout/trigger design,and providing insights into scintillation detectors based on WLS-fibers.Three types of trigger modes and their efficiencies were defined to comprehensively evaluate the performance of this unique design,which was verified through batch production,comprehensive measurement strategies,and quality inspection methods.In“module”mode,the detection(tagging)efficiency of the PS exceeded 99.67%at a 30-photoelectron threshold,and even in“AND”mode,it surpassed 99.60%at a 15-photoelectron threshold.The muon tagging efficiency satisfies the requirements of TAO.The production and performance of PS modules establish a benchmark for other experiments,with optimized optical fiber arrangements that enhance light yield and muon detection efficiency.

关 键 词：Plastic scintillator WLS-fiber Muon tagging efficiency Light yield TAO 

分 类 号：O572.33[理学—粒子物理与原子核物理]