光电倍增管双电位聚焦系统设计研究
Design and Research of Dual Potential Focusing System for Photomultiplier Tubes
张杰 1王浩东 1邓涛 1曹磊 1朱德飞 1方莉1
作者信息
- 1. 南京三乐集团有限公司 ,江苏南京 211800
- 折叠
摘要
光电倍增管聚焦系统收集效率是影响光电倍增管性能的关键因素.本文提出了一种双电位聚焦技术,通过二次聚焦,将光电阴极产生的电子束进一步聚焦,通过COMSOL Multiphysics仿真软件对电位差、聚焦极直径、高度等参数进行了仿真优化,使得收集效率可达 92.1%以上.通过装管验证,光电倍增管增益提高了14.76%.
Abstract
The collection efficiency of the focusing system is a key factor affecting the performance of the photomultiplier tube.A dual potential focusing technique is proposed,which further focuses the elec-tron beam generated by the photocathode through secondary focusing.The COMSOL Multiphysics soft-ware is used to simulate and optimize parameters such as potential difference,focusing electrode diameter and height,resulting in a collection efficiency of over 92.1%.The prototype tube verification shows the gain of the photomultiplier tube is increased by 14.76%.
关键词
光电倍增管/聚焦系统/双电位/收集效率Key words
Photomultiplier tube/Focusing system/Dual potential focusing system/Collection effi-ciency引用本文复制引用
基金项目
国家重点研发计划资助项目(2021YFF0700600)
国家重点研发计划资助项目(2021YFF0700800)
国家自然科学基金项目(U2241207)
出版年
2024
国家科技期刊平台
NSTL
万方数据