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Study on the tail in TDOE of the coated MCP-PMT and its suppression
Author(s): Lin Chen; Xingchao Wang; Jinshou Tian; Lixing Fan; Liping Tian; Lingbin Shen
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Paper Abstract

Depositing a high secondary electron yield (SEY) film on the microchannel plate (MCP) input electrode is supposed to be an effective approach to improve the photoelectron collection efficiency (CE) of photomultiplier tubes based on MCPs (MCP-PMTs). Nevertheless, secondaries promoted by the photoelectrons striking the MCP input face may cause a long tail in the time distribution of the output electrons (TDOE). In our work, laying a conductive grid upon the MCPs is proposed as an effective approach to suppress the tail. A three-dimensional MCP-PMT model is developed in CST STUDIO SUITE to systematically investigate the dependence of the TDOE on the applied voltage (U) of the grid at the coated material SEY=6. Simulation results show that high voltage applied on the grid could suppress the delay pulse effectively. The optimal U is above 500 V.

Paper Details

Date Published: 19 November 2019
PDF: 7 pages
Proc. SPIE 11184, Optoelectronic Devices and Integration VIII, 111840W (19 November 2019); doi: 10.1117/12.2537851
Show Author Affiliations
Lin Chen, Jinling Institute of Technology (China)
Xingchao Wang, Southeast Univ. (China)
North Night Vision Technology Co., Ltd. (China)
Jinshou Tian, Xi'an Institute of Optics and Precision Mechanics (China)
Lixing Fan, Jinling Institute of Technology (China)
Liping Tian, Jinling Institute of Technology (China)
Lingbin Shen, Jinling Institute of Technology (China)


Published in SPIE Proceedings Vol. 11184:
Optoelectronic Devices and Integration VIII
Xuping Zhang; Baojun Li; Changyuan Yu; Xinliang Zhang; Daoxin Dai, Editor(s)

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