Development of ICRF wall conditioning technique on divertor-type tokamaks ASDEX Upgrade and JET

Autor: G. Haas, A.I. Lyssoivan, M. P. Cox, Eric Gauthier, I. Monakhov, M. E. Graham, W. Suttrop, V. Mertens, F. Braun, Ph. Mertens, A. Walden, O. Gehre, A. G. Meigs, J. Gafert, J.-M. Noterdaeme, K. D. Lawson, A. Huber, H.G. Esser, T. R. Blackman, F. Wesner, V. Philipps, V. Rohde, G. F. Matthews, V. Bobkov, R. Koch, D. A. Hartmann, M. J. Mantsinen, M. Santala, D. Van Eester, J. Neuhauser, Jet-Efda Contributors, P. de Vries, M.-L. Mayoral, P. J. Lomas, H.-U. Fahrbach
Rok vydání: 2005
Předmět:
Zdroj: Journal of Nuclear Materials. :456-460
ISSN: 0022-3115
Popis: Encouraging results of efficient wall conditioning with ICRF discharges achieved on the circular tokamaks (without divertors) TEXTOR, TORE SUPRA, HT-7 stimulated the next step in the development of an alternative wall conditioning technique that is relevant to reactor-scale superconducting fusion machines. Here, the first results on the ICRF discharge initiation and the wall conditioning on the large-size non-circular tokamaks ASDEX Upgrade and JET using the standard ICRF antennas are reported. Analysis of the mass-spectrum data on both machines indicates noticeable outgassing of deuterium, water and hydrocarbons from the walls despite operating with a non-optimized set of ICRF discharge parameters.
Databáze: OpenAIRE