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

Autor(es):Mostrar menos -

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]

Afiliação do(s) autor(es)

^[1] IRFM, F-13108 St Paul Les Durance - France

^[2] Tore Supra Team, CEA, IRFM, F-13108 St Paul Les Durance - France

• Tipo de documento: Artigo Científico
• Fonte: Physics of Plasmas; v. 21, n. 6 JUN 2014.
• Citações Web of Science: 3

Resumo

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)

• Processo FAPESP: 11/50773-0 - Núcleo de excelência em física e aplicações de plasmas
• Beneficiário: Ricardo Magnus Osório Galvão
• Modalidade de apoio: Auxílio à Pesquisa - Temático