单螺旋通道的通道电子倍增器性能研究  

Performance of channel electron multiplier with single helix channel

作　　者：张斌婷 刘术林[1,3] 闫保军 韦雯露 彭华兴 ZHANG Binting;LIU Shulin;YAN Baojun;WEI Wenlu;PENG Huaxing(State Key Laboratory of Particle Detection and Electronics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;School of Nuclear Sciences and Technology,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]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,北京100049 [2]中国科学院大学物理科学学院,北京100049 [3]中国科学院大学核科学与技术学院,北京100049

出　　处：《核技术》2023年第10期31-37,共7页Nuclear Techniques

基　　金：国家重点研发计划(No.2022YFF0705600)资助。

摘　　要：在现有的微通道板皮料玻璃配方的基础上,经过一系列的制作工艺设计和改进,最终制作出了具有合适性能的单螺旋通道的通道电子倍增器;之后搭建了以盘香型钽灯丝作为输入电流的通道电子倍增器(Channel Electron Multiplier,CEM)模拟模式测试装置和以紫外发光二极管结合金阴极作为输入信号的CEM脉冲计数模式测试装置,对该器件的综合性能参数进行全面的测试与评价;测试结果表明:本实验室自行研制的单螺旋通道的通道电子倍增器的模拟增益和脉冲增益分别为1×10^(4)~1×10^(6)和1×10^(7)~1×10^(8),增益值随着工作电压的升高而增加,输出脉冲的上升时间为2~3 ns,性能接近国外同行的同类器件。[Background]There are no commercially available channel electron multipliers(CEMs)made of glass in domestic market of China;more complex CEMs with helix channels are scarcer.[Purpose]This study aims to develop a CEM with a single helix channel,and test its performace for satisfying the requirements of high-end users of such products.[Methods]First of all,a series of manufacturing process designs and improvements were made on the basis of the formula of microchannel sheet glass,resulting in the production of a single spiral channel electron multiplier with suitable performance.Then,a CEM analog mode test device with a disc-incense type tantalum filament as the input current and a CEM pulse-counting mode test device with an ultraviolet light-emitting diode combined with a gold cathode as the input signal were set up to conduct comprehensive testing of the device's performance parameters.[Results]The newly developed CEM with single helix channel achieves gains of 1×104~1×106 in the analog mode and 1×107~1×108 in the pulse-counting mode.The gain value increases with the increase of the working voltage,and the rise time of the output pulse is 2~3 ns.[Conclusions]The overall performance of the developed CEM is close to that of foreign counterparts,and the CEM can be used in related instruments.

关 键 词：通道电子倍增器 增益 模拟模式 脉冲计数模式 

分 类 号：TL813[核科学技术—核技术及应用]