Study on spatial resolution of micromegas as a neutron detector under condition of high neutron flux and γ ray background

WANG Wen-Xin; ZHANG Yi; WANG Ji-Jin; HU Bi-Tao

doi:10.1088/1674-1137/33/2/007

Chinese Physics C> 2009, Vol. 33> Issue(2) : 110-113 DOI: 10.1088/1674-1137/33/2/007

Study on spatial resolution of micromegas as a neutron detector under condition of high neutron flux and γ ray background

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Abstract：
In this paper Micromegas has been designed to detect neutrons. The simulation of the spatial resolution of Micromegas as neutron detector is carried out by GEANT4 toolkit. The neutron track reconstruction method based on the time coincidence technology is employed in the present work. The influence of the flux of incident 14 MeV neutron and high gamma background on the spatial resolution is carefully studied. Our results show that the spatial resolution of the detector is sensitive to the neutron flux, but insensitive to the intensity of γ background if the neutron track reconstruction method proposed by our group is used. The γ insensitivity makes it possible for us to use the Micromegas detector under condition which has high γ-rays background.
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WANG Wen-Xin, ZHANG Yi, WANG Ji-Jin and HU Bi-Tao. Study on spatial resolution of micromegas as a neutron detector under condition of high neutron flux and γ ray background[J]. Chinese Physics C, 2009, 33(2): 110-113. doi: 10.1088/1674-1137/33/2/007

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Received: 2008-04-16
Revised: 2008-05-06

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Study on spatial resolution of micromegas as a neutron detector under condition of high neutron flux and γ ray background

Corresponding author: HU Bi-Tao,

Received Date: 2008-04-16
Accepted Date: 2008-05-06
Available Online: 2009-02-05

Abstract:

In this paper Micromegas has been designed to detect neutrons. The simulation of the spatial resolution of Micromegas as neutron detector is carried out by GEANT4 toolkit. The neutron track reconstruction method based on the time coincidence technology is employed in the present work. The influence of the flux of incident 14 MeV neutron and high gamma background on the spatial resolution is carefully studied. Our results show that the spatial resolution of the detector is sensitive to the neutron flux, but insensitive to the intensity of γ background if the neutron track reconstruction method proposed by our group is used. The γ insensitivity makes it possible for us to use the Micromegas detector under condition which has high γ-rays background.