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

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.


Published in:
Plasma Physics And Controlled Fusion, 49, B551-B562
Presented at:
34th European-Physical-Society Conference on Plasma Physics, Warsaw, POLAND, Jul 02-06, 2007
Year:
2007
Keywords:
Laboratories:
SPC
CRPP




 Record created 2012-07-04, last modified 2018-01-28


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