Journal article
Comparison of measured and simulated fast ion velocity distributions in the TEXTOR tokamak
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
Aalto University3
Swiss Federal Institute of Technology Lausanne4
Forschungszentrum Jülich GmbH5
Dutch Institute for Fundamental Energy Research6
Here we demonstrate a comprehensive comparison of collective Thomson scattering (CTS) measurements with steady-state Monte Carlo simulations performed with the ASCOT and VENUS codes. The measurements were taken at a location on the magnetic axis as well as at an off-axis location, using two projection directions at each location.
The simulations agree with the measurements on-axis, but for the off-axis geometries discrepancies are observed for both projection directions. For the near perpendicular projection direction with respect to the magnetic field, the discrepancies between measurement and simulations can be explained by uncertainty in plasma parameters.
However, the discrepancies between measurement and simulations for the more parallel projection direction cannot be explained solely by uncertainties in plasma parameters. Here anomalous fast ion transport is a possible explanation for the discrepancy.
| Language: | English |
|---|---|
| Year: | 2011 |
| Pages: | 105004 |
| ISSN: | 13616587 and 07413335 |
| Types: | Journal article |
| DOI: | 10.1088/0741-3335/53/10/105004 |
| ORCIDs: | Korsholm, Søren Bang , Leipold, Frank , Michelsen, Poul , Nielsen, Stefan Kragh , Salewski, Mirko and Stejner Pedersen, Morten |
