Efficiency calculation of the nMCP with 10B doping based on mathematical models

Jianqing Yang; Jianrong Zhou; Lianjun Zhang; Jinhao Tan; Xingfen Jiang; Jianjin Zhou; Xiaojuan Zhou; Linjun Hou; Yushou Song; XinLi Sun; Quanhu Zhang; Zhijia Sun; Yuanbo Chen

Nuclear Engineering and Technology (Jul 2021)

Efficiency calculation of the nMCP with 10B doping based on mathematical models

Jianqing Yang,
Jianrong Zhou,
Lianjun Zhang,
Jinhao Tan,
Xingfen Jiang,
Jianjin Zhou,
Xiaojuan Zhou,
Linjun Hou,
Yushou Song,
XinLi Sun,
Quanhu Zhang,
Zhijia Sun,
Yuanbo Chen

Affiliations

Jianqing Yang: Xi’an Research Inst. of Hi-Tech, 710025, Xian, China; Spallation Neutron Source Science Center, Dongguan, 523803, Guangdong, China; State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
Jianrong Zhou: Spallation Neutron Source Science Center, Dongguan, 523803, Guangdong, China; State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding author. Dongguan, China.
Lianjun Zhang: Spallation Neutron Source Science Center, Dongguan, 523803, Guangdong, China; State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; Harbin Engineering University, Harbin, Heilongjiang, 150000, China
Jinhao Tan: Spallation Neutron Source Science Center, Dongguan, 523803, Guangdong, China; State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; Harbin Engineering University, Harbin, Heilongjiang, 150000, China
Xingfen Jiang: Spallation Neutron Source Science Center, Dongguan, 523803, Guangdong, China; State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
Jianjin Zhou: Spallation Neutron Source Science Center, Dongguan, 523803, Guangdong, China; State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
Xiaojuan Zhou: Spallation Neutron Source Science Center, Dongguan, 523803, Guangdong, China; State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
Linjun Hou: Xi’an Research Inst. of Hi-Tech, 710025, Xian, China
Yushou Song: Harbin Engineering University, Harbin, Heilongjiang, 150000, China
XinLi Sun: Xi’an Research Inst. of Hi-Tech, 710025, Xian, China
Quanhu Zhang: Xi’an Research Inst. of Hi-Tech, 710025, Xian, China; Corresponding author. Xian, China.
Zhijia Sun: Spallation Neutron Source Science Center, Dongguan, 523803, Guangdong, China; State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding author. Beijing, China.
Yuanbo Chen: Spallation Neutron Source Science Center, Dongguan, 523803, Guangdong, China; State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China

Journal volume & issue: Vol. 53, no. 7
pp. 2364 – 2370

Abstract

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The nMCP (Neutron sensitive microchannel plate) combined with advanced readout electronics is widely used in energy selective neutron imaging because of its good spatial and timing resolution. Neutron detection efficiency is a crucial parameter for the nMCP. In this paper, a mathematical model based on the oblique cylindrical channel and elliptical pore was established to calculate the neutron absorption probability, the escape probability of charged particles and overall detection efficiency of nMCP and analyze the effects of neutron incident position, pore diameter, wall thickness and bias angle. It was shown that when the doping concentration of the nMCP was 10 mol%, the thickness of nMCP was 0.6 mm, the detection efficiency could reach maximum value, about 24% for thermal neutrons if the pore diameter was 6 μm, the wall thickness was 2 μm and the bias angle was 3 or 6°. The calculated results are of great significance for evaluating the detection efficiency of the nMCP. In a subsequent companion paper, the mathematical model would be extended to the case of the spatial resolution and detection efficiency optimization of the coating nMCP.

Published in Nuclear Engineering and Technology

ISSN: 1738-5733 (Print)
Publisher: Elsevier
Country of publisher: Korea, Republic of
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: http://www.journals.elsevier.com/nuclear-engineering-and-technology

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