Conveners
Parallel Session VII (5)：Particle Detector Technology
- 向明 孙 (华中师范大学)
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Prof. Guofu Cao (IHEP), Dr Haibo Yang (IME)11/08/2022, 08:30粒子物理实验技术Oral reportIt is of great importance to develop a photodetector system with an ultralow radioactivity background in rare event searches. Silicon photomultipliers (SiPMs) and application-specific integrated circuits (ASICs) are two ideal candidates for low background photosensors and readout electronics, respectively, because they are mainly composed of silicon, which can achieve good radio-purity without...Go to contribution page
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Mr Jilei Xu (高能所)11/08/2022, 08:45粒子物理实验技术Oral reportJiangmen Underground Neutrino Observatory (JUNO) is the next generation of neutrino experiment in China to determine the neutrino mass ordering, which is under construction in Guangdong Province. The 25600 3-inch PMTs will be installed in the gaps between 17612 closely packed 20-inch PMTs to reach an excellent energy resolution [3%/√E(MeV)] and an accurate energy scale determination [better...Go to contribution page
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土琛 黄 (Sun Yat-Sen University)11/08/2022, 09:00粒子物理实验技术Oral report
近年来，硅光电倍增器（SiPM）作为光电倍增管（PMT）的替代用于闪烁体读出得到广泛应用。SiPM具有和PMT相当的增益，但具有高量子效率、低偏置电压、小体积、高强度和磁场兼容性等优点，缺点是暗噪声大、动态范围小。由于单片SiPM面积较小（目前最大6mmx6mm），用于英寸尺度的闪烁晶体读出时需要采用多个SiPM组成阵列，SiPM的暗噪声以及大电容是影响测量的关键因素。在本文中，采用SiPM阵列作为闪烁体读出，针对多种不同的晶体（NaI(Tl)、SrI2、CLYC、EJ-276、EJ-301、NaIL等）用于伽马能谱测量以及伽马/中子粒子甄别等应用，结合优化设计的电路，对能量分辨率、线性度、脉冲波形甄别性能等开展了系统研究，并与PMT的测量结果进行比较。实验结果表明，SiPM阵列用于闪烁体读出，在能量分辨率和脉冲波形辨别上可以实现和PMT读出相当的性能，为小型化仪器设计提供了重要参考。
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Mr Zhimin WANG (中国科学院高能物理研究所)11/08/2022, 09:15粒子物理实验技术Oral reportWe will discuss an imaging measurement with a single photon sensitive and low noise camera aiming to a new paradigm in the optical readout of scintillation detectors. The features of the single photon sensitive camera will be characterized and demonstrated with a measurement on double-slit Young's interference in single photon mode. An imaging test on CsI(Tl) crystal and alpha source will be...Go to contribution page
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Ms Lishuang MA (Institute of High Energy Physics)11/08/2022, 09:30粒子物理实验技术Oral reportSmall-size Micro-Channel-Plate Photomultiplier (MCP-PMT) has attracted extensive attention in the fields of high-energy physics, medical imaging and biological detection due to its ultrafast temporal resolution. We introduce the R&D of novel MCP-PMT with ultrafast rise time (RT) and transit time spread (TTS), which is called fast timing PMT (FPMT). We mainly introduce two kinds of FPMTs,...Go to contribution page
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游晓浩11/08/2022, 09:45粒子物理实验技术Oral report一种新研制的具有良好时间响应的国产20英寸光电倍增管采用微通道板替代传统的倍增打拿级。我们使用了包裹在薄的PET中的高磁导率铁基非晶材料柔性薄片保护光电倍增管免受地磁场的影响。水切伦科夫探测器阵列中的数据分析结果表明，采用磁屏蔽后，探测效率平均提高了87%；并且时间谱中来自于MCP基板上产生的二次电子的成分，相对于无磁屏蔽的情况下减少了50%。Go to contribution page
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Fuyudi Zhang (上海交通大学李政道研究所)11/08/2022, 10:00粒子物理实验技术Oral report“海铃计划” (The TRIDENT) 是正在筹备中的位于中南南海的下一代中微子望远镜项目。为刻画预选海域的性质，"海铃探路者" (The TRIDENT Pathfinder) 项目于2021年9月在南海西沙群岛附近完成海试。此次海试最主要科的学目标是测量原位海水光学的性质，为后期探测器阵列设计，及利用切伦科夫光进行中微子重建提供关键数据。“海铃探路者”测量系统由三个光学球舱组成，其中包含一个发光球舱和两个接收球舱。每一个接收球舱搭载了三个海南展创生产的3英寸光电倍增管（PMT）。本次报告将会介绍PMT测量系统的设计理念，低温刻度实验情况，以及海试中的性能表现。Go to contribution page
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Prof. 梁志均 LIANG Zhijun11/08/2022, 10:15粒子物理实验技术Oral reportThis talk summarized the activity of IHEP/NJU group on ATLAS High granularity timing detector (HGTD) in phase II upgrade. Low-Gain Avalanche Detector (LGAD) is one of the key technology for timing detector. IHEP developed radiation hard LGAD sensors with domestic technology (IHEP-IME sensor), which became the most radiation hard LGAD sensor by far. IHEP is also leading the HGTD module...Go to contribution page