Investigation Into the Operating Characteristics of Fused Quartz Vacuum Surface Flashover Switch

Author

Bo Zeng ; Jiancang Su ; Xibo Zhang ; Jie Cheng ; Xiaolong Wu ; Xiyuan She ; Limin Wang ; Jinpeng Fang

Author_Institution

Dept. of Eng. Phys., Tsinghua Univ., Beijing, China

Volume

43

Issue

6

fYear

2015

fDate

Jun-15

Firstpage

1999

Lastpage

2004

Abstract

Vacuum surface flashover switch is a promising technique scheme of high repetitive frequency fast-closing switch applied to dielectric wall accelerator. In this paper, the switch is experimentally investigated, and a nanosecond pulse with 2.02-ns effective rise time is obtained. For a cylinder-fused quartz dielectric, the breakdown field of the switch is near 55 kV/cm, and the value for the frustoconical-shaped dielectric exceeds 120 kV/cm with a lifetime up to 69000 discharges. The repetitive frequency ability of the switch is better than 100 Hz, and the breakdown voltage increases slightly with higher frequency.

Keywords

electric breakdown; flashover; quartz; vacuum switches; breakdown field; cylinder-fused quartz dielectric; dielectric wall accelerator; frequency 100 Hz; frustoconical-shaped dielectric exceeds; fused quartz vacuum surface flashover switch; high repetitive frequency fast-closing switch; nanosecond pulse; repetitive frequency ability; Dielectrics; Discharges (electric); Resistance; Surface cracks; Surface discharges; Switches; Breakdown field; discharge trace; switch lifetime; vacuum surface flashover switch; vacuum surface flashover switch.;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2015.2389859

Filename

7112545