Statistical characterization of high voltage vacuum surface flashover with gapped and ungapped anodes

Mounho, M.; Fuksa, C.; Clark, R.; Brooks, W.; Hopkins, M.; Steiner, A.; Neuber, A.; Stephens, J.

doi:10.1063/5.0214059

Statistical characterization of high voltage vacuum surface flashover with gapped and ungapped anodes

Journal Article · Fri Aug 02 00:00:00 EDT 2024 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0214059· OSTI ID:2567870

; Fuksa, C.; ; ; ; ; ;

This manuscript reports the experimental study of a novel vacuum high-voltage (HV) feedthrough geometry with a recessed anode triple junction (ATJ) relevant to large-scale pulsed power systems. It is shown experimentally that introducing a vacuum gap between the insulator–anode interface and recessing the ATJ farther away from the cathode triple junction significantly enhances high voltage (HV) vacuum surface flashover hold-off. The results for “first pulse” and “consecutive pulse” tests are reported. The physical mechanisms contributing to the electrical failure of this feedthrough geometry appear to be unique to this geometry. These findings show the potential to allow for HV vacuum surface flashover geometries with significantly improved electrical characteristics.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: NONE; NA0003525

OSTI ID:: 2567870

Alternate ID(s):: OSTI ID: 2480232

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 31; ISSN 1070-664X

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

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