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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationRadio Frequency Power in plasmas - Proceedings of the 18th Topical Conference
Pages213-220
Number of pages8
DOIs
Publication statusPublished - 2009
Event18th Topical Conference on Radio Frequency Power in plasmas - Gent, Belgium
Duration: 24 Jun 200926 Jun 2009

Publication series

NameAIP Conference Proceedings
Volume1187
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference18th Topical Conference on Radio Frequency Power in plasmas
Country/TerritoryBelgium
CityGent
Period24/06/0926/06/09

Keywords

  • Anterma
  • ICRF
  • ITER
  • JET
  • Tokamak

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