Overview on experiments on ITER-like antenna on JET and ICRF antenna design for ITER

M. P.S. Nightingale, F. Durodié, A. Argouarch, B. Beaumont, A. Becoulet, J. M. Bernard, T. Blackman, J. Caughman, P. Dumortier, D. Edwards, J. Fanthome, T. Gassman, R. Goulding, M. Graham, C. Hamlyn-Harris, D. Hancock, S. Huygen, P. Jacquet, F. Kazarian, R. KochP. U. Lamalle, E. Lerche, F. Louche, R. Maggiora, M. L. Mayoral, A. M. Messiaen, D. Milanesio, I. Monakhov, A. Mukherjee, K. Nicholls, J. M. Noterdaeme, J. Ongena, D. Rasmussen, F. Rimini, R. Sartori, D. Stork, D. Van Eester, M. Vervier, M. Vrancken, K. Vulliez, A. Whitehurst, D. Wilson, E. Wooldridge

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Résumé

Following an overview of the ITER Ion Cyclotron Resonance Frequency (ICRF) system, the JET ITER-like antenna (ILA) will be described. The ILA was designed to test the following ITER issues: (a) reliable operation at power densities of order 8MW/m2 at voltages up to 45 kV using a close-packed array of straps; (b) powering through ELMs using an internal (in-vacuum) conjugate-T junction; (c) protection from arcing in a conjugate-T configuration, using both existing and novel systems; and (d) resilience to disruption forces. ITER-relevant results have been achieved: operation at high coupled power density; control of the antenna matching elements in the presence of high inter-strap coupling, use of four conjugate-T systems (as would be used in ITER, should a conjugate-T approach be used); operation with RF voltages on the antenna structures up to 42 kV; achievement of ELM tolerance with a conjugate-T configuration by operating at 3Ω real impedance at the conjugate-T point; and validation of arc detection systems on conjugate-T configurations in ELMy H-mode plasmas. The impact of these results on the predicted performance and design of the ITER antenna will be reviewed. In particular, the implications of the RF coupling measured on JET will be discussed.

langue originaleAnglais
titreRadio Frequency Power in plasmas - Proceedings of the 18th Topical Conference
Pages213-220
Nombre de pages8
Les DOIs
étatPublié - 2009
Evénement18th Topical Conference on Radio Frequency Power in plasmas - Gent, Belgique
Durée: 24 juin 200926 juin 2009

Série de publications

NomAIP Conference Proceedings
Volume1187
ISSN (imprimé)0094-243X
ISSN (Electronique)1551-7616

Une conférence

Une conférence18th Topical Conference on Radio Frequency Power in plasmas
Pays/TerritoireBelgique
La villeGent
période24/06/0926/06/09

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