Study on spatial resolution of micromegas as a neutron detector under condition of high neutron flux and γ ray backgroun
In this paper Micromegas has been designed to detect neutrons. The simulation of the spatial reso-lution 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.
作 者： WANG Wen-Xin ZHANG Yi WANG Ji-Jin HU Bi-Tao 作者单位： School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China 刊 名： 中国物理C（英文版） ISTIC 英文刊名： CHINESE PHYSICS C 年，卷(期)： 2009 33(2) 分类号： O4 关键词： micromegas neutron detection GEANT4 spatial resolution γ sensitivity