Efficiency calculation of the n MCP with 10 B 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

doi:https://doi.org/10.1016/j.net.2021.01.026

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자료유형: 학술저널

저자정보: Jianqing Yang (Xi’an Research Inst. of Hi-Tech) Jianrong Zhou (Spallation Neutron Source Science Center) Lianjun Zhang (Spallation Neutron Source Science Center) Jinhao Tan (Spallation Neutron Source Science Center) Xingfen Jiang (Spallation Neutron Source Science Center) Jianjin Zhou (Spallation Neutron Source Science Center) Xiaojuan Zhou (Spallation Neutron Source Science Center) Linjun Hou (Xi’an Research Inst. of Hi-Tech) Yushou Song (Harbin Engineering University) XinLi Sun (Xi’an Research Inst. of Hi-Tech) Quanhu Zhang (Xi’an Research Inst. of Hi-Tech) Zhijia Sun (Spallation Neutron Source Science Center) Yuanbo Chen (Spallation Neutron Source Science Center)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제7호

발행연도: 2021.7

수록면: 2,364 - 2,370 (7page)

DOI: https://doi.org/10.1016/j.net.2021.01.026

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The nMCP (Neutron sensitive microchannel plate) combined with advanced readout electronics is widelyused in energy selective neutron imaging because of its good spatial and timing resolution. Neutrondetection efficiency is a crucial parameter for the nMCP. In this paper, a mathematical model based on theoblique cylindrical channel and elliptical pore was established to calculate the neutron absorptionprobability, the escape probability of charged particles and overall detection efficiency of nMCP andanalyze the effects of neutron incident position, pore diameter, wall thickness and bias angle. It wasshown 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 porediameter was 6 mm, the wall thickness was 2 mm and the bias angle was 3 or 6 . The calculated results areof great significance for evaluating the detection efficiency of the nMCP. In a subsequent companionpaper, the mathematical model would be extended to the case of the spatial resolution and detectionefficiency optimization of the coating nMCP.

#nMCP #Detection efficiency #Mathematical model

참고문헌 (18)

참고문헌 신청

H. Chen / 2016 / China’s first pulsed neutron source / Nat. Mater 15(7):689~691

J.R. Zhou / 2011 / Neutron beam monitor based on a boroncoated GEM / Chin. Phys. C (7):668~674

A. S. Tremsin / 2008 / On the possibility to image thermal and cold neutron with sub-15 mm spatial resolution / Nucl. Instrum. Methods Phys. Res. Sect. A Accel. Spectrom. Detect. Assoc. Equip 592(3):374~384

Tremsin, A. S. / 2006 / High efficiency thermal neutron imaging with submicrosecond timing resolution / 2006 IEEE Nuclear Science Symposium Conference Record 1:193~198

W.B. Feller / 2000 / Neutron field imaging with microchannel plates / Proc. Soc. Photo Opt. Instrum. Eng (4141):291~302

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