ECRH-assisted plasma start-up with toroidally inclined launch: Multi-machine comparison and perspectives for ITER

J. Stober, G. L. Jackson, E. Ascasibar, Y. S. Bae, J. Bucalossi, A. Cappa, T. Casper, M. H. Cho, Y. Gribov, G. Granucci, K. Hanada, J. Hobirk, A. W. Hyatt, S. Ide, J. H. Jeong, M. Joung, T. Luce, T. Lunt, W. Namkung, S. I. ParkP. A. Politzer, J. Schweinzer, A. C.C. Sips

    研究成果: Contribution to journalArticle査読

    41 被引用数 (Scopus)

    抄録

    Electron cyclotron resonance heating (ECRH)-assisted plasma breakdown is foreseen with full and half magnetic field in ITER. As reported earlier, the corresponding O1- and X2-schemes have been successfully used to assist pre-ionization and breakdown in present-day devices. This contribution reports on common experiments studying the effect of toroidal inclination of the ECR beam, which is ≥20° in ITER. All devices could demonstrate successful breakdown assistance for this case also, although in some experiments the necessary power was almost a factor of 2 higher compared with perpendicular launch. Differences between the devices with regard to the required power and vertical field are discussed and analysed. In contrast to most of these experiments, ITER will build up loop voltage prior to the formation of the field null due to the strong shielding by the vessel. Possible consequences of this difference are discussed.

    本文言語英語
    論文番号083031
    ジャーナルNuclear Fusion
    51
    8
    DOI
    出版ステータス出版済み - 8 2011

    All Science Journal Classification (ASJC) codes

    • 核物理学および高エネルギー物理学
    • 凝縮系物理学

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