Effect of RF heating on edge parameters in the TCA tokamak

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/231664

Title: Effect of RF heating on edge parameters in the TCA tokamak
Author(s): de Chambrier, A.; Collins, G. A.; Duperrex, P. A.; Heym, A.; Hofmann, F.; Hollenstein, Ch; Joye, B.; Keller, R.; Lietti, A.; Lister, J. B.; Marcus, F. B.; Moret, J. M.; Nowak, S.; Pochelon, A.; Simm, W.; Veprek, S.
Abstract: Detailed scrape-off measurements during Alfven wave heating experiments (P RF approx. 200 kW) in TCA are presented. The Measurements are performed by means of electrical probes and by deposition probes fixed onto the antennae. It is shown that different antenna designs strongly influence the behaviour of the boundary plasma. Even during low power RF heating experiments is it found that the plasma-antenna interaction leads to a non-Maxwellian plasma. Low frequency density fluctuations are associated with changes of the density and temperature profiles during RF. High frequency fluctuations at the driving frequency and their harmonics are observed.
Publication type: Journal article
Source: Journal of Nuclear Materials, Vol. 128-129 (Dec 1984), pp. 310-316
Publication year: 1984
FOR Code(s): 0912 Materials Engineering
Keyword(s): Alfven wave heating; Density fluctuation; Plasma-antenna interaction; RF heating; Scrape-off-layer
Publisher: Elsevier
ISSN: 0022-3115
Publisher URL: http://dx.doi.org/10.1016/0022-3115(84)90371-4
Peer reviewed