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ICRF physics aspects of wall conditioning with conventional antennas in large-size tokamaks

  • A. Lyssoivan
  • , R. Koch
  • , D. Douai
  • , J. M. Noterdaeme
  • , V. Philipps
  • , V. Rohde
  • , F. C. Schüller
  • , G. Sergienko
  • , D. Van Eester
  • , T. Wauters
  • , T. Blackman
  • , V. Bobkov
  • , S. Brémond
  • , S. Brezinsek
  • , E. De La Cal
  • , R. Dumont
  • , M. Garcia-Munoz
  • , E. Gauthier
  • , M. Graham
  • , S. Jachmich
  • E. Joffrin, A. Kreter, P. U. Lamalle, E. Lerche, G. Lombard, F. Louche, M. Maslov, M. L. Mayoral, V. E. Moiseenko, P. Mollard, I. Monakhov, J. Ongena, M. K. Paul, R. A. Pitts, V. Plyusnin, W. Suttrop, E. Tsitrone, M. Van Schoor, G. Van Wassenhove, M. Vervier
  • Commissariat à l'Énergie Atomique (CEA)
  • Max-Planck-Institut für Plasmaphysik
  • University of Ghent
  • ITER
  • Culham Centre for Fusion Energy
  • Laboratorio Nacional de Fusión
  • Inst. of Plasma Physics of the National Science Center, Kharkiv Institute of Physics and Technology
  • Instituto Superior Técnico

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

25 Citations (Scopus)

Résumé

This paper focuses on a study of the principal operation aspects of standard ICRF heating antennas in the ion cyclotron wall conditioning (ICWC) mode: (i) ability of the antenna to ignite the cleaning discharge safely and reliably in different gases including those most likely to be used in ITER - He, H2, D2 and their mixtures, (ii) the antenna capacity to couple a large fraction of the RF generator power (>50%) to low density (∼1016-1018 m-3) plasmas and (iii) the RF power absorption schemes aimed at improved RF plasma homogeneity and enhanced conditioning effect. The ICWC discharge optimization in terms of RF plasma wave excitation/absorption resulted in successful simulation of the conditioning scenarios for ITER operation at full field (JET) and half-field (TEXTOR, TORE SUPRA, ASDEX Upgrade).

langue originaleAnglais
Pages (de - à)S1029-S1032
journalJournal of Nuclear Materials
Volume415
Numéro de publication1 SUPPL
Les DOIs
étatPublié - 1 août 2011

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