A low-jitter self-break repetitive multi-stage gas switch

Peng-Cheng Gao; Jian-Cang Su; Bo Zeng; Rui Li; Liang Zhao; Jie Cheng; Xu-Dong Qiu; Xiao-Long Wu

doi:10.1063/1.4973420

A low-jitter self-break repetitive multi-stage gas switch

Rev Sci Instrum. 2017 Feb;88(2):024705. doi: 10.1063/1.4973420.

Authors

Peng-Cheng Gao¹, Jian-Cang Su¹, Bo Zeng¹, Rui Li¹, Liang Zhao¹, Jie Cheng¹, Xu-Dong Qiu¹, Xiao-Long Wu¹

Affiliation

¹ Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, China.

PMID: 28249517
DOI: 10.1063/1.4973420

Abstract

A megavolt low-jitter self-break repetitive gas switch is developed by the use of the corona stabilization and the multi-stage structure in this paper. This switch is multi-stage, consisting of one corona stabilization stage and subsequent rimfire stages. The corona stabilization stage breakdowns first, then the subsequent rimfire stages are self-fired by the over-voltage from the closure of the corona stabilization stage. SF₆ is used in the switch. It has been proven by experiment that the multi-stage gas switch, which consists of one 1.3-cm gap corona stabilization stage and five 0.5-cm gap rimfire stages, can operate at repetition rate frequency (PRF) of 50 Hz with a voltage jitter less than 2% in 2000 discharges. The breakdown voltage of this multi-stage switch reaches 770 kV and the single discharge current is 8.50 kA at 4 bars.