Experimental study of current loss of a single-hole post-hole convolute on the QG I generator  

作　　者：Hanyu WU Zhengzhong ZENG Mengtong QIU Peitian CONG Jinhai ZHANG Xinjun ZHANG Ning GUO 吴撼宇;曾正中;邱孟通;丛培天;张金海;张信军;郭宁

机构地区：[1]State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Northwest Institute of Nuclear Technology,Xi’an 710024,People’s Republic of China

出　　处：《Plasma Science and Technology》2020年第1期104-110,共7页等离子体科学和技术（英文版）

摘　　要：The post-hole convolute(PHC),which is used to transport and combine the pulse power flux,is a key component in huge pulsed power generators.Current loss at the PHC is a challenging problem for researchers.To explore a method of reducing the current loss,a single-hole PHC was designed for experiments on the current loss on the Qiang Guang I generator.The experimental results showed that the current loss at the single-hole PHC is related to the distance/between the vicinity of the cathode hole and the surface of the downstream side of the post.Meanwhile,a single-hole PHC with a blob cathode hole transmitted current more effectively than the PHC with a circle cathode hole.The relative current loss at the single-hole PHC with the cathode coaled w ith gold foil was about 30%-50% of that with the cathode coated with nickel and titanium foil.The gap closing speed was also obtained from the current waveforms in the experiments.The speed was 5.74-14.52 cmμs 1 which was different from the classical plasma expansion velocity of 3 cmμs 1.

关 键 词：plasma post-hole convolute magnetic insulation current loss 

分 类 号：TM31[电气工程—电机]