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

TitleFast-ion dynamics in the TEXTOR tokamak measured by collective Thomson scattering
Publication TypeJournal Article
Year of Publication2006
AuthorsH. Bindslev, S.K. Nielsen, L. Porte, J.A Hoekzema, S.B Korsholm, F. Meo, P.K Michelsen, S. Michelsen, J.W Oosterbeek, E.L Tsakadze, E. Westerhof, P. Woskov
JournalPhysical Review Letters
Volume97
Number20
Pagination4
Date PublishedNov
Type of ArticleArticle
ISBN Number0031-9007
Accession NumberISI:000242101600027
KeywordsBEAM IONS, diagnostics, ENERGETIC IONS, EXCITATION, FLUCTUATIONS, FUSION PLASMAS, JET, TEMPERATURE, TOROIDAL PLASMAS, WAVES
Abstract

Here we present the first measurements by collective Thomson scattering of the evolution of fast-ion populations in a magnetically confined fusion plasma. 150 kW and 110 Ghz radiation from a gyrotron were scattered in the TEXTOR tokamak plasma with energetic ions generated by neutral beam injection and ion cyclotron resonance heating. The temporal behavior of the spatially resolved fast-ion velocity distribution is inferred from the received scattered radiation. The fast-ion dynamics at sawteeth and the slowdown after switch off of auxiliary heating is resolved in time. The latter is shown to be in close agreement with modeling results.

URL<Go to ISI>://000242101600027
Division

Fusion Physics

Department

Tokamak physics

PID

83445b6ca38e86d6db64371511b78bd5

Alternate TitlePhys. Rev. Lett.

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