Development status of the PAL sealed-off pseudospark switches

Author

Heo, H. ; Park, S.S. ; Nam, S.H.

Author_Institution

Pohang Accelerator Lab., POSTECH, Pohang, South Korea

fYear

2004

fDate

23-26 May 2004

Firstpage

596

Lastpage

598

Abstract

We developed sealed-off type pseudospark switches for high current applications over 100 kA, with long pulse duration of several ms. We investigated the characteristics of sealed-off pseudospark switches, such as trigger delay times, hold-off voltages, peak currents, and effective charge transfer energy losses, recovery times. Effects of the electrode material and structure, power level of the switch reservoir, and vacuum conditioning of virgin electrodes as a method of electrode pretreatment are considered in this investigation. We also discuss the fabrication process of the high current sealed-off type pesudospark switches at the Pohang Accelerator Laboratory (PAL).

Keywords

electrodes; pulsed power switches; sparks; PAL; Pohang Accelerator Laboratory; charge transfer energy losses; electrode material; electrode pretreatment; electrode structure; fabrication process; hold-off voltages; long pulse duration; peak currents; power levels; recovery times; sealed-off pseudospark switches; switch reservoir; trigger delay times; vacuum conditioning; virgin electrodes; Anodes; Arc discharges; Cathodes; Charge transfer; Electrodes; Fabrication; Fault location; Silicon carbide; Switches; Tungsten;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Modulator Symposium, 2004 and 2004 High-Voltage Workshop. Conference Record of the Twenty-Sixth International

Print_ISBN

0-7803-8586-1

Type

conf

DOI

10.1109/MODSYM.2004.1433647

Filename

1433647