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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Advances in long pulse operation at high radio frequency power in Tore Supra

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Author(s):
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Goniche, M. [1] ; Dumont, R. [1] ; Bourdelle, C. [1] ; Decker, J. [1] ; Delpech, L. [1] ; Ekedahl, A. [1] ; Guilhem, D. [1] ; Guimaraes-Filho, Z. [1] ; Litaudon, X. [1] ; Lotte, Ph [1] ; Maget, P. [1] ; Mazon, D. [1] ; Saoutic, B. [1] ; Team, Tore Supra [2]
Total Authors: 14
Affiliation:
[1] IRFM, F-13108 St Paul Les Durance - France
[2] Tore Supra Team, CEA, IRFM, F-13108 St Paul Les Durance - France
Total Affiliations: 2
Document type: Journal article
Source: Physics of Plasmas; v. 21, n. 6 JUN 2014.
Web of Science Citations: 3
Abstract

The lower hybrid current drive (LHCD) system of Tore Supra has been upgraded for long pulse operation at higher power (7-8 MW). The two launchers have coupled on plasma 3.8MW and 2.7MW separately. This new power capability allows extending the operational domain of Tore Supra for long pulses at higher current and density. 38 long (20 s - 155 s) discharges with very low loop voltage (V-L = 30-60 mV) were performed with combined LHCD (5-5.7MW) and ICRH (1-3MW) powers, with up to 1 GJ of injected energy. Higher LHCD efficiency, with respect to the previous long discharges, is reported. MHD stability of these discharges is very sensitive to the LHCD power and parallel wave index, in particular in the preforming phase. For theses evanescent loop voltage plasmas, the ICRH power, in excess of 1MW, is found to have a beneficial effect on the MHD stability. (C) 2014 AIP Publishing LLC. (AU)

FAPESP's process: 11/50773-0 - Center of excellence in physics and applications of plasmas
Grantee:Ricardo Magnus Osório Galvão
Support Opportunities: Research Projects - Thematic Grants