Fast-ion dynamics in the TEXTOR tokamak measured by collective Thomson scattering

Henrik Bindslev, Stefan Kragh Nielsen, L. Porte, J.A. Hoekzema, Søren Bang Korsholm, Fernando Meo, Poul Michelsen, Susanne Michelsen, J.W. Oosterbeek, Erekle Tsakadze, E. Westerhof, P. Woskov

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    Abstract

    The dynamics of fast ion populations in the TEXTOR tokamak are measured by collective Thomson scattering of millimetre wave radiation generated by a gyrotron operated at 110 GHz and 100-150 kW. Temporal evolution of the energetic ion velocity distribution at switch on of neutral beam injection (NBI) and the slowdown after switch off of NBI are measured. The turn on phase of the NBI has, furthermore, been measured in plasmas with a range of electron densities and temperatures. All of these measurements are shown to be in good agreement with simple Fokker-Planck modelling. Bulk ion rotation velocity is also measured.
    Original languageEnglish
    JournalPlasma Physics and Controlled Fusion
    Volume49
    Issue number12B
    Pages (from-to)B551-B562
    ISSN0741-3335
    DOIs
    Publication statusPublished - 2007
    Event34th EPS Conference on Plasma Physics - Warsaw, Poland
    Duration: 2 Jul 20076 Jul 2007

    Conference

    Conference34th EPS Conference on Plasma Physics
    CountryPoland
    CityWarsaw
    Period02/07/200706/07/2007

    Bibliographical note

    Invited paper

    Cite this

    Bindslev, H., Nielsen, S. K., Porte, L., Hoekzema, J. A., Korsholm, S. B., Meo, F., Michelsen, P., Michelsen, S., Oosterbeek, J. W., Tsakadze, E., Westerhof, E., & Woskov, P. (2007). Fast-ion dynamics in the TEXTOR tokamak measured by collective Thomson scattering. Plasma Physics and Controlled Fusion, 49(12B), B551-B562. https://doi.org/10.1088/0741-3335/49/12B/S52