Toroidal rotation in Ohmic and RF heated JET plasmas

M. F.F. Nave, L. G. Eriksson, T. Hellsten, K. D. Zastrow, B. Alper, Y. Andrew, R. Barnsley, J. Brzozowski, K. Crombé, A. Czarnecka, M. Von Hellermann, J. Ongena

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The central region of Ohmic plasmas in the JET divertor configuration are counter rotating with toroidal frequencies up to -8 krad/s. ICRF heated plasmas have been found to either co or counter- rotate with central angular frequencies ranging from -6 krad/s to +10 krad/s. Once the Ohmic rotation is subtracted, one finds in most cases co-current acceleration when ICRF power is applied. In addition, the ICRF induced rotation appears to originate in the plasma core and it was found to be sensitive to the plasma current. The differences in frequency profile shape cannot be attributed to differences in sawtooth instability. The outer part of the plasma is observed to rotate in the co-current direction independently of heating scenario.

Original languageEnglish
Title of host publication34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts
Pages1705-1708
Number of pages4
Edition3
Publication statusPublished - 2007
Event34th European Physical Society Conference on Plasma Physics 2007, EPS 2007 - Warsaw, Poland
Duration: 2 Jul 20076 Jul 2007

Publication series

Name34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts
Number3
Volume31

Conference

Conference34th European Physical Society Conference on Plasma Physics 2007, EPS 2007
Country/TerritoryPoland
CityWarsaw
Period2/07/076/07/07

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