Remote-Steering Antennas for 140 GHz Electron Cyclotron Heating of the Stellarator W7-X
1 Institute of Interfacial Process Engineering and Plasma Technology IGVP, University of Stuttgart, Germany
2 Max-Planck-Institut fuer Plasmaphysik, Boltzmannstr. 2, 85748 Garching, Germany
3 NTG Neue Technologie GmbH & Co KG, 63571 Gelnhausen, Germany
4 Galvano-T electroplating-electroforming GmbH, 51570 Windeck-Rosbach, Germany
a Corresponding author: firstname.lastname@example.org
Published online: 24 July 2017
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.
© The Authors, published by EDP Sciences, 2017
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