Performance of channel electron multiplier with single helix channel

被引：0
|
作者：
Zhang B. [1 ,2 ]
Liu S. [1 ,3 ]
Yan B. [1 ]
Wei W. [1 ,2 ]
Peng H. [1 ,2 ]
机构：
[1] State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing
[2] School of Physical Sciences, University of Chinese Academy of Sciences, Beijing
[3] School of Nuclear Sciences and Technology, University of Chinese Academy of Sciences, Beijing
来源：
He Jishu/Nuclear Techniques | 2023年 / 46卷 / 10期
关键词：
Analog mode; Channel electron multiplier; Gain; Pulse-counting mode;
D O I：
10.11889/j.0253-3219.2023.hjs.46.100403
中图分类号：
学科分类号：
摘要：
[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. © 2023 Science Press. All rights reserved.
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