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

• Published in: Chinese physics C Vol. 33; no. 2; pp. 110 - 113
• Main Author: 王文昕 张毅 王集锦 胡碧涛
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.02.2009; School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
• Subjects: γ灵敏度; 中子探测; 中子踪迹; 中子重建; 空间分辨率; GEANT4; spatial resolution; neutron detection; γ sensitivity; micromegas
• ISSN: 1674-1137; 0254-3052; 2058-6132
• DOI: 10.1088/1674-1137/33/2/007

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.