Design concepts for a long pulse upgrade for the DIII-D fast wave antenna array

  • P. M. Ryan
  • , F. W. Baity
  • , J. B.O. Caughman
  • , R. H. Goulding
  • , J. C. Hosea
  • , N. L. Greenough
  • , A. Nagy
  • , R. I. Pinsker
  • , D. A. Rasmussen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A goal in the 5-year plan for the fast wave program on DIII-D is to couple a total of 3.6 MW of RF power into a long pulse, H-mode plasma for central electron heating. The present short-pulse 285/300 antenna array would need to be replaced with one capable of at least 1.2 MW, 10 s operation at 60 MHz into an H-mode (low resistive loading) plasma condition. The primary design under consideration uses a poloidally-segmented strap (3 sections) for reduced strap voltage near the plasma/Faraday screen region. Internal capacitance makes the antenna structure self-resonant at 60 MHz, strongly reducing peak E-fields in the vacuum coax and feed throughs.

Original languageEnglish (US)
Title of host publicationRadio Frequency Power in plasmas - Proceedings of the 18th Topical Conference
Pages305-308
Number of pages4
DOIs
StatePublished - 2009
Event18th Topical Conference on Radio Frequency Power in plasmas - Gent, Belgium
Duration: Jun 24 2009Jun 26 2009

Publication series

NameAIP Conference Proceedings
Volume1187
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference18th Topical Conference on Radio Frequency Power in plasmas
Country/TerritoryBelgium
CityGent
Period6/24/096/26/09

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • General Physics and Astronomy
  • Nature and Landscape Conservation

Keywords

  • DIII-D
  • Fast wave antenna
  • RF Heating

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