基于高压模块供电的MCP-PMT高压击穿故障分析及设计改进  

Analysis and design improvement of MCP-PMT high-voltage breakdown fault based on high voltage module power supply

作　　者：马烈华[1] 龙继东[1] 陈永涛[1] 王城[1] 丁明军[1] 李波[1] 李晏敏[1] 艾杰[1] Ma Liehua;Long Jidong;Chen Yongtao;Wang Cheng;Ding Mingjun;Li Bo;Li Yanmin;Ai Jie(Institute of Fluid Physics,CAEP,P.O.Box 919-120,Mianyang)

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《强激光与粒子束》2022年第9期72-77,共6页High Power Laser and Particle Beams

摘　　要：为克服MCP-PMT传统高压供电设备体积大、便携性差的问题,采用了基于小型化高压模块的高压供电方式。该系统在实际使用过程中发生了一起MCP-PMT高压击穿故障。详细分析了该系统的故障原因,将问题定位为MCP-PMT内部真空度下降导致的耐压性能下降,同时还发现了导致故障发生的诱因是高压模块在加电时刻存在的高压过冲现象。针对高压模块的过冲问题,本文提出了较为巧妙的设计改进方法并取得了良好的效果,进一步提高了MCP-PMT系统的工程应用可靠性。To overcome the large size and poor portability of MCP-PMT traditional high-voltage power supply equipment,a high-voltage power supply mode based on miniaturized high-voltage module is adopted.During the practical use of the system,a high-voltage breakdown fault of MCP-PMT occurred.In this paper,the fault causes of the system are analyzed in detail,and the problem is identified as the decline of withstand voltage performance caused by the decline of internal vacuum of MCP-PMT,and it is also found that the high voltage overshoot of the high voltage module at the time of power-up is the cause of this fault.Aiming at the overshoot problem of high-voltage module,this paper puts forward a more ingenious design improvement method and achieves good results,which further improves the engineering application reliability of MCP-PMT system.

关 键 词：MCP-PMT 高压模块 高压击穿 

分 类 号：O461[理学—电子物理学] TM85[理学—物理]