EPJ Web of Conferences (Jan 2017)

Remote-Steering Antennas for 140 GHz Electron Cyclotron Heating of the Stellarator W7-X

  • Lechte C.,
  • Kasparek W.,
  • Plaum B.,
  • Zeitler A.,
  • Erckmann V.,
  • Laqua H.,
  • Schneider N.,
  • Weissgerber M.,
  • Bechtold A.,
  • Busch M.,
  • Szepaniak B.

DOI
https://doi.org/10.1051/epjconf/201714704004
Journal volume & issue
Vol. 147
p. 04004

Abstract

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For electron cyclotron resonance heating of the stellarator W7-X at IPP Greifswald, a 140 GHz/10 MW cw millimeter wave system has been built. Two out of 12 launchers will employ a remote-steering design. This paper describes the overall design of the two launchers, and design issues like input coupling structures, manufacturing of corrugated waveguides, optimization of the steering range, integration of vacuum windows, mitrebends and vacuum valves into the launchers, as well as low power tests of the finished waveguides.