Overview of recent results on heating and current drive in the JET tokamak

M. L. Mayoral, J. Ongena, A. Argouarch, Yu Baranov, T. Blackman, V. Bobkov, R. Budny, L. Colas, A. Czarnecka, L. Delpech, F. Durodié, A. Ekedahl, M. Gauthier, M. Goniche, R. Goulding, M. Graham, J. Hillairet, S. Huygen, Ph Jacquet, T. JohnsonV. Kiptily, K. Kirov, M. Laxåback, E. Lerche, J. Mailloux, I. Monakhov, M. F.F. Nave, M. Nightingale, V. Plyusnin, V. Petrzilka, F. Rimini, D. Van Eester, A. Whitehurst, E. Wooldridge, M. Vrancken

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

Abstract

In this paper, significant results in the heating and current drive domains obtained at JET in the past few years following systems upgrade and dedicated experimental time, will be reviewed. Firstly, an overview of the new Ion Cyclotron Resonance Frequency (ICRF) heating capabilities will be presented i.e. results from the ITER-Like ICRF antenna (ILA), the use of External Conjugate-T and 3dB hybrid couplers to increase the ICRF power during ELMy H-mode. Furthermore, experiments to study the influence of the phasing of the ICRF antenna on power absorption and coupling will be described. Looking at Low Hybrid (LH) issues for ITER, the effect of the location of gas injection on the LH coupling improvement at large launcher-separatrix distances will be discussed as the possibility to operate at ITER-relevant power densities. Experiments to characterise the LH power losses in the Scrape-Off-Layer (SOL) and to determine the LH wave absorption and current drive using power modulation will be shown. Finally, plasma rotation studies in the presence of ICRF heating with standard and enhanced JET toroidal field ripple will be presented.

Original languageEnglish
Title of host publicationRadio Frequency Power in plasmas - Proceedings of the 18th Topical Conference
Pages39-46
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

  • Conjugate-T
  • Current drive
  • ELM tolerance
  • Heating
  • ICRF
  • JET
  • LH
  • Rotation

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