Fast wave current drive in JET ITB-plasma

T. Hellsten, M. Laxåback, T. Bergkvist, T. Johnson, M. Mantsinen, G. Matthews, F. Meo, F. Nguyen, J.-M. Noterdaeme, C.C. Petty, T. Tala, D. Van Eester, P. Andrew, P. Beaumont, V. Bobkov, M. Brix, J. Brzozowski, L.-G. Eriksson, C. Giroud, E. JoffrinV. Kiptily, J. Mailloux, M.-L. Mayoral, I. Monakhov, R. Sartori, A. Staebler, E. Rachlew, E. Tennfors, A. Tuccillo, A. Walden, K.-D. Zastrow

Research output: Contribution to conferencePaper

Abstract

Fast wave current drive has been performed in JET plasmas with internal transport barriers, ITBs, and strongly reversed magnetic shear. Although the current drive efficiency of the power absorbed on the electrons is fairly high, only small effects are seen in the central current density. The main reasons are the parasitic absorption of RF power, the strongly inductive nature of the plasma and the interplay between the fast wave driven current and bootstrap current. The direct electron heating in the FWCD experiments is found to be strongly degraded compared to that with the dipole phasing. © 2005 American Institute of Physics.
Original languageEnglish
DOIs
Publication statusPublished - 26 Sep 2005
Externally publishedYes
EventRADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas - , United States
Duration: 26 Sep 2005 → …

Conference

ConferenceRADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas
CountryUnited States
Period26/9/05 → …

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Hellsten, T., Laxåback, M., Bergkvist, T., Johnson, T., Mantsinen, M., Matthews, G., ... Zastrow, K-D. (2005). Fast wave current drive in JET ITB-plasma. Paper presented at RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas, United States. https://doi.org/10.1063/1.2098240