Journal article
Fast-ion redistribution due to sawtooth crash in the TEXTOR tokamak measured by collective Thomson scattering
Plasma Physics and Technology Programme, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Management, Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Dutch Institute for Fundamental Energy Research4
Forschungszentrum Jülich GmbH5
Massachusetts Institute of Technology6
Here we present collective Thomson scattering measurements of 1D fast-ion velocity distribution functions in neutral beam heated TEXTOR plasmas with sawtooth oscillations. Up to 50% of the fast ions in the centre are redistributed as a consequence of a sawtooth crash. We resolve various directions to the magnetic field.
The fast-ion distribution is found to be anisotropic as expected. For a resolved angle of 39° to the magnetic field we find a drop in the fast-ion distribution of 20–40%. For a resolved angle of 83° to the magnetic field the drop is no larger than 20%.
| Language: | English |
|---|---|
| Year: | 2010 |
| Pages: | 092001 |
| ISSN: | 13616587 and 07413335 |
| Types: | Journal article |
| DOI: | 10.1088/0741-3335/52/9/092001 |
| ORCIDs: | Nielsen, Stefan Kragh , Salewski, Mirko , Korsholm, Søren Bang , Leipold, Frank , Michelsen, Poul and Stejner Pedersen, Morten |
