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Optimal design of coded aperture used for Z-Pinch driven fusion neutron imaging

Optimal design of coded aperture used for Z-Pinch driven fusion neutron imaging

作     者:JIA QingGang HU HuaSi ZHENG XiangYang ZHANG FengNa WANG DongMing HU Guang ZHANG TianKui WU YueLei 

作者机构:Institute of Nuclear Science and Technology Xi'an Jiaotong University State Environmental Protection Administration (SEPA)Nuclear and Radiation Safety Centre Research Center of Laser Fusion China Academy of Engineering Physics 

出 版 物:《Science China(Technological Sciences)》 (中国科学(技术科学英文版))

年 卷 期:2015年第58卷第7期

页      面:1289-1293页

核心收录:

学科分类:0810[工学-信息与通信工程] 08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 081001[工学-通信与信息系统] 

基  金:supported by the National Natural Science Foundation of China(Grant No.10975113) Innovative Research Team in University of Ministry of Education of China(Nuclear Energy Science and Engineering)(Grant No.IRT1280) 

主  题:Z-pinch driven fusion neutron imaging coded aperture signal to noise ratio low neutron yield 

摘      要:Currently,the neutron yield of Z-Pinch is lower than that of laser driven *** the neutron imaging for this facility,the signal to noise ratio(SNR)has a significant influence on the expected spatial resolution of the reconstructed fusion core,especially in the condition of low neutron *** this paper,mathematical model is purposed to describe the dependence of aperture parameters on the imaging *** investigation shows that the imaging SNR is closely related to the size of contrast boundary on the point spread *** to this,a novel non-uniform redundancy penumbra apertures array is *** addition,the imaging performances of this novel coded aperture,penumbra aperture and ring aperture are evaluated and compared by Monte Carlo *** comparison shows that this novel aperture has significant advantage compared to the penumbra aperture which is commonly used for neutron imaging with low *** encouraging results can provide reference for the optimal design of the coded aperture used in the neutron imaging for Z-pinch driven fusion with low neutron yield.

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