【作者】 朱瑶； 钱森； 王治乐； 高峰； 马丽双； 陈鹏宇； 宁哲；

【Author】 ZHU Yao;QIAN Sen;WANG Zhile;GAO Feng;MA Lishaung;CHEN Pengyu;Department of Electronic Science and Technology, Harbin Institute of technology;State Key Laboratory of Particle Detection and Electronics;Institute of High Energy Physics, Chinese Academy of Sciences;School of mechanical and material engineering, North China University of Technology;

【机构】 哈尔滨工业大学航天学院； 中国科学院高能物理研究所； 核探测与核电子学国家重点实验室； 北方工业大学；

【摘要】 相对于传统光电倍增管(PMT)的大体积打拿倍增极(Dynode)材料,小体积的微通道板(MCP)因其自身结构特性,应用为光电倍增管的倍增极后,PMT具有较好的时间特性。尤其是近贴聚焦型的小尺寸MCP-PMT,其超快速时间特性以及抗强磁场等优点,在航天航空、超快诊断等领域得到广泛应用。因此,研究此款MCP-PMT的时间特性,对进一步研制超快时间响应的FPMT具有重要的指导作用。通过优化实验测试装置实现ps激光器的单光子脉冲工作模式,在不同光强及PMT分压比条件下,对多款1吋的FPMT的时间特性进行测试研究,结果显示,不同的分压器结构设计、阳极读出方式对同一只FPMT的时间分辨影响很大。对于不能测试到单光子谱的样管,可以通过测试其在多个光强下时间分布的变化曲线,拟合出其时间分辨的下限值。更多还原

【Abstract】 Compared with the traditional large dynode photomultiplier tube(PMT), the small size microchannel plate(MCP) PMT has better time properties. In particular, the small size MCP-PMT of proximity focusing construct has many advantages such as ultra-fast time characteristics and strong magnetic field resistance. By using the picosecond laser within the single photon pulse operation mode, the time characteristics of various 1 inch FPMTs are tested under different light intensity and voltage ratio conditions in our Lab. The result shows that different voltage ratio and the anode readout construction have a great influence on the time resolution of the same FPMT. And also the minimum value of time resolution can be fitted by testing the change of TTS with light intensity.更多还原