Study of Vacuum Insulator Flashover for Pulse Lengths of Multi-Microseconds

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We are studying the flashover of vacuum insulators for applications where high voltage conditioning of the insulator and electrodes is not practical and for pulse lengths on the order of several microseconds. The study is centered about experiments performed with a 100-kV, 10-ms pulsed power system and supported by a combination of theoretical and computational modeling. The base line geometry is a cylindrically symmetric, +45{sup o} insulator between flat electrodes. In the experiments, flashovers or breakdowns are localized by operating at field stresses slightly below the level needed for explosive emissions with the base line geometry. The electrodes and/or insulator ... continued below

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Houck, T; Goerz, D; Javedani, J; Lauer, E; Tully, L & Vogtlin, G July 31, 2006.

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We are studying the flashover of vacuum insulators for applications where high voltage conditioning of the insulator and electrodes is not practical and for pulse lengths on the order of several microseconds. The study is centered about experiments performed with a 100-kV, 10-ms pulsed power system and supported by a combination of theoretical and computational modeling. The base line geometry is a cylindrically symmetric, +45{sup o} insulator between flat electrodes. In the experiments, flashovers or breakdowns are localized by operating at field stresses slightly below the level needed for explosive emissions with the base line geometry. The electrodes and/or insulator are then seeded with an emission source, e.g. a tuft of velvet, or a known mechanical defect. Various standard techniques are employed to suppress cathode-originating flashovers/breakdowns. We present the results of our experiments and discuss the capabilities of modeling insulator flashover.

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  • Presented at: 2006 Linear Accelerator Conference, Knoxville, TN, United States, Aug 21 - Aug 25, 2006

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  • Report No.: UCRL-CONF-223361
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 895995
  • Archival Resource Key: ark:/67531/metadc888053

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  • July 31, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 7, 2016, 10:41 p.m.

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Houck, T; Goerz, D; Javedani, J; Lauer, E; Tully, L & Vogtlin, G. Study of Vacuum Insulator Flashover for Pulse Lengths of Multi-Microseconds, article, July 31, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc888053/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.