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Experimental study of dielectric window breakdown suppression technology under HPM in vacuum

  • Xi Wei Hao
  • , Guan Jun Zhang
  • , Hui Jun Huang
  • , Jin Yong Fang
  • , Chang Hua Chen
  • , Wen Hua Huang
  • Xi'an Jiaotong University
  • Northwest Institute of Nuclear Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In order to restrain surface breakdown of dielectric window in HPM (High Power Microwave) devices, experimental research of surface breakdown suppression technology for PTFE is performed under an S-band HPM experimental system in this paper. Different suppression technologies are employed, such as surface polishing, surface notching and surface coating technologies, etc. Experimental results show that polishing treatment on dielectric surface can increase surface breakdown threshold. The surface grooves parallel to the direction of electric field can reduce surface breakdown threshold, while the grooves perpendicular to the direction of electric field can suppress surface breakdown, and the effect is influenced by the depth and width of groove. The surface breakdown experiment of TiN coating on PTFE surface is performed, and the results are also discussed. A new machinable ceramic material is proposed, and the main electrical characteristics of which are introduced. This new material will be promising as dielectric window material of HPM devices.

Original languageEnglish
Title of host publicationISDEIV 2010 - 24th International Symposium on Discharges and Electrical Insulation in Vacuum, Proceedings
Pages113-116
Number of pages4
DOIs
StatePublished - 2010
Event24th International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV 2010 - Braunschweig, Germany
Duration: 30 Aug 20103 Sep 2010

Publication series

NameProceedings - International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV
ISSN (Print)1093-2941

Conference

Conference24th International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV 2010
Country/TerritoryGermany
CityBraunschweig
Period30/08/103/09/10

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