Effect of the dynamic ergodic divertor in the TEXTOR tokamak on MHD stability, plasma rotation and transport

TitleEffect of the dynamic ergodic divertor in the TEXTOR tokamak on MHD stability, plasma rotation and transport
Publication TypeJournal Article
Year of Publication2005
AuthorsRC Wolf, W. Biel, M.FM de Bock, K.H. Finken, S. Gunter, G.MD Hogeweij, S. Jachmich, M.W Jakubowski, R.JE Jaspers, A. Kramer-Flecken, H.R Koslowski, M. Lehnen, Y. Liang, B. Unterberg, S.K Varshney, M. von Hellermann, Q. Yu, O. Zimmermann, S.S Abdullaev, A.JH Donne, U. Samm, B. Schweer, M. Tokar, E. Westerhof
JournalNuclear Fusion
Volume45
Number12
Pagination1700-1707
Date PublishedDec
Type of ArticleArticle
ISBN Number0029-5515
Accession NumberISI:000234452300029
KeywordsDIII-D, JET, MAGNETIC PERTURBATIONS, NEOCLASSICAL TEARING MODES, OPERATION, PENETRATION
Abstract

With the dynamic ergodic divertor in TEXTOR fundamental effects of the coupling of external magnetic field perturbations to the confined plasma have been studied. The non-linear coupling between external (m/n = 12/4) and internal modes (m/n = 3/1) has been investigated. The critical perturbation field (m/n = 3/1) for the excitation of an m/n = 2/1 tearing mode depends not only on the magnitude but also on the direction of the toroidal angular momentum input by neutral beam injection (NBI). Below the excitation threshold of this mode a toroidal spin-up of the plasma has been observed, which only depends on the strength of the perturbation field. It is independent of both the rotation direction of the external perturbation field and the toroidal angular momentum supplied by the NBI.

URL<Go to ISI>://000234452300029
Division

Fusion Physics

Department

Instrumentation development

PID

9640212972cb05453d2e3123751db721

Alternate TitleNucl. Fusion

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