ICRF antenna performance on Tore Supra
- Oak Ridge National Laboratory, PO Box 2009, Oak Ridge, Tennessee 37831-8071 (United States)
- Centre dEtudes de Cadarache, Association EURATOM-CEA sur la Fusion BP113108, St. Paul lez Durance (France)
Resonant double loop (RDL) ion cyclotron range of frequencies (ICRF) Antennas have operated on Tore Supra at power levels up to {approximately}3.5MW per 2-element launcher. The RDL configuration is of particular interest because it has operated at high power densities (15MW/m{sup 2} on Tore Supra) and is the topology chosen for the ITER ICRF launchers. Two Faraday shield designs are in use which produce different loading for nearly identical antenna radial positions, and different heating patterns on antenna surfaces due to rf/edge plasma interaction. Loading and maximum antenna voltage for a given power level have been found to vary between the different antennas in a frequency dependent manner. This behavior has been analyzed using a lossy transmission model. In addition, antenna surface heating patterns have been found to be highly phase dependent and reproducible over time. Strong localized power fluxes are often observed to determine the launcher power limit rather than internal voltages and currents. {copyright} {ital 1997 American Institute of Physics.}
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 570274
- Report Number(s):
- CONF-9704102-; ISSN 0094-243X; TRN: 98:003627
- Journal Information:
- AIP Conference Proceedings, Vol. 403, Issue 1; Conference: 12. topical conference on radio frequency power in plasmas, Savannah, GA (United States), 1-3 Apr 1997; Other Information: PBD: Apr 1997
- Country of Publication:
- United States
- Language:
- English
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