Comparison of measured and simulated fast ion velocity distributions in the TEXTOR tokamak

TitleComparison of measured and simulated fast ion velocity distributions in the TEXTOR tokamak
Publication TypeJournal Article
Year of Publication2011
AuthorsD. Moseev, F. Meo, S.B Korsholm, T. Koskela, M. Albergante, O. Asunta, H. Bindslev, A. Burger, V. Furtula, M.Y Kantor, F. Leipold, P.K Michelsen, S.K. Nielsen, M. Salewski, O. Schmitz, M. Stejner, E. Westerhof
JournalPlasma Physics and Controlled Fusion
Volume53
Issue10
Number10
Pagination105004
Date PublishedOct
Type of ArticleArticle
ISBN Number0741-3335
Keywordscollective Thomson scattering, JET, PLASMAS, TRANSPORT
Abstract

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.

DOI10.1088/0741-3335/53/10/105004
Division

FP

Department

PDG

PID

0c10e954e14bb5fee706a258ed42bf0d

Alternate TitlePlasma Phys. Control. Fusion

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