Progress in the validation of the voltage holding prediction model at the high-voltage padova test facility

Antonio De Lorenzi, Nicola Pilan, Emanuele Spada

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13 Citations (Scopus)

Abstract

In the framework of the program for the construction - in Padova, Italy - of the first prototype of the International Thermonuclear Experimental Reactor 1 MeV-16 MW negative neutral beam injector (NNBI), an R&D activity on voltage holding in vacuum has been initiated since 2009, aimed at supporting the design, construction, and development of the NNBI accelerator. For this purpose, the high-voltage Padova test facility, designed to operate up to 800 kV, has been built, in parallel to the development of a multivoltage multielectrode voltage holding prediction model (VHPM). This paper focuses on the results of the experimental campaign (up to 270 kV) carried out on a number of electrostatic configurations, aimed at validating the VHPM under a well-controlled condition. The prediction capability of the model is partially confirmed. This result makes it worthwhile to review the physical basis of the model - based on the Cranberg-Slivkov clump theory - while also taking into consideration an alternative breakdown initiation mechanism. © 2012 IEEE.
Original languageEnglish
Article number6477152
Pages (from-to)2128 - 2134
Number of pages7
JournalIEEE Transactions on Plasma Science
Volume41
Issue number8
DOIs
Publication statusPublished - 2013
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Nuclear and High Energy Physics

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