Performance optimization of the neutron-sensitive image intensifier used in neutron imaging

doi:10.1088/1674-1056/ad47ad

Abstract As a non-destructive testing technology, neutron imaging plays an important role in various fields, including material science, nuclear engineering, and fundamental science. An imaging detector with a neutron-sensitive image intensifier has been developed and demonstrated to achieve good spatial resolution and timing resolution. However, the influence of the working voltage on the performance of the neutron-sensitive imaging intensifier has not been studied. To optimize the performance of the neutron-sensitive image intensifier at different voltages, experiments have been performed at the China Spallation Neutron Source (CSNS) neutron beamline. The change in the light yield and imaging quality with different voltages has been acquired. It is shown that the image quality benefits from the high gain of the microchannel plate (MCP) and the high accelerating electric field between the MCP and the screen. Increasing the accelerating electric field is more effective than increasing the gain of MCPs for the improvement of the imaging quality. Increasing the total gain of the MCP stack can be realized more effectively by improving the gain of the standard MCP than that of the nMCP. These results offer a development direction for image intensifiers in the future.

Keywords: neutron detector neutron imaging microchannel plate image intensifier

Received: 27 January 2024
Revised: 14 April 2024
Accepted manuscript online: 06 May 2024

PACS:	61.05.Tv	(Neutron imaging; neutron tomography)
	29.25.Dz	(Neutron sources)
	29.40.Wk	(Solid-state detectors)
	28.20.Pr	(Neutron imaging; neutron tomography)

Fund: Project supported by the National Key R&D Program of China (Grant Nos. 2023YFC2206502 and 2021YFA1600703), the National Natural Science Foundation of China (Grant Nos. 12175254 and 12227810), and the Guangdong- HongKong-Macao Joint Laboratory for Neutron Scattering Science and Technology.

Corresponding Authors: Yushou Song, Jianrong Zhou
E-mail: songyushou80@163.com;zhoujr@ihep.ac.cn

Cite this article:

Jinhao Tan(谭金昊), Yushou Song(宋玉收), Jianrong Zhou(周健荣), Wenqin Yang(杨文钦), Xingfen Jiang(蒋兴奋), Jie Liu(刘杰), Chaoyue Zhang(张超月), Xiaojuan Zhou(周晓娟), Yuanguang Xia(夏远光), Shulin Liu(刘术林), Baojun Yan(闫保军), Hui Liu(刘辉), Songlin Wang(王松林), Yubin Zhao(赵豫斌), Jian Zhuang(庄建), Zhijia Sun(孙志嘉), and Yuanbo Chen(陈元柏) Performance optimization of the neutron-sensitive image intensifier used in neutron imaging 2024 Chin. Phys. B 33 086102

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