RF-sheath heat flux estimates on Tore Supra and JET ICRF antennae. Extrapolation to ITER

Journal Article · Thu Nov 26 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3273711· OSTI ID:21335689

Colas, L; Portafaix, C; Goniche, M ^[1]; Jacquet, Ph ^[2]; Agarici, G ^[3]

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1. CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France)
2. EURATOM/UKAEA Fusion Association, Culham, OX14 3DB (United Kingdom)
3. Fusion for Energy, C/Josep Pla 2, E-08019 Barcelona (Spain)

RF-sheath induced heat loads are identified from infrared thermography measurements on Tore Supra ITER-like prototype and JET A2 antennae, and are quantified by fitting thermal calculations. Using a simple scaling law assessed experimentally, the estimated heat fluxes are then extrapolated to the ITER ICRF launcher delivering 20 MW RF power for several plasma scenarios. Parallel heat fluxes up to 6.7 MW/m{sup 2} are expected very locally on ITER antenna front face. The role of edge density on operation is stressed as a trade-off between easy RF coupling and reasonable heat loads. Sources of uncertainty on the results are identified.

• OSTI ID: 21335689
• Journal Information: AIP Conference Proceedings, Vol. 1187, Issue 1; Conference: 18. topical conference on radio frequency power in plasmas, Gent (Belgium), 24-26 Jun 2009; Other Information: DOI: 10.1063/1.3273711; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTENNAS
COUPLING
HEAT FLUX
HEATING LOAD
ICR HEATING
INFRARED THERMOGRAPHY
ION CYCLOTRON-RESONANCE
ITER TOKAMAK
JET TOKAMAK
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA SHEATH
SCALING LAWS
TORE SUPRA TOKAMAK
WAVEGUIDES