A novel method for multichannel discharge image diagnosis in gas switches based on multi-axis tomography techniques

作     者：张艳红 盛亮 李阳 张美 黑东炜 Yanhong ZHANG;Liang SHENG;Yang LI;Mei ZHANG;Dongwei HEI

作者机构：State Key Laboratory of Intense Pulsed Radiation Simulation and EffectNorthwest Institute of Nuclear TechnologyXi'an 710024People's Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2023年第25卷第6期

页      面：65-71页

核心收录：

学科分类：0808[工学-电气工程] 080803[工学-高电压与绝缘技术] 08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

基　　金：supported by National Natural Science Foundation of China(No.11575147) the Distinguished Youth Fund(No.JQZQ021901) 

主　　题：discharge channel TVM-OSEM gas switch location 

摘      要：The discharge channel is a crucial diagnostic tool for identifying the properties of gas ***,single-view images cannot easily be used to inherently understand the discharge channel characteristics of trigger electrodes.A reconstruction method of the discharge channel in gas switches is proposed based on a multi-axis tomography technique,which uses very few projections of optical images to reconstruct the location of a multichannel discharge in annular *** this paper,an algorithm named TVM-OSEM(total variation minimization ordered subsets expectation maximization)is proposed,which can effectively remove artifact noise to improve the reconstruction accuracy of discharge *** method is validated against simulations of a radiator with high-density-difference *** calculated discharge channel distribution from one experiment is presented.