Journal Article

PreJuSER-41356

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Influence of the Dynamic Ergodic Divertor on the Density Limit in TEXTOR

Liang, Y.FZJ* ; Koslowski, H. R.FZJ* ; Kelly, F. A.FZJ* ; Tokar, M. Z.FZJ* ; Loozen, X.FZJ* ; Bertschinger, G.FZJ* ; Biel, W.FZJ* ; Finken, K. H.FZJ* ; Jakubowski, M. W.FZJ* ; Krämer-Flecken, A.FZJ* ; Zimmermann, O.FZJ* ; Lehnen, M.FZJ* ; Sergienko, G.FZJ* ; Wolf, R. C.FZJ*

2005
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/1847  doi:10.1103/PhysRevLett.94.105003

Abstract: A significant influence of the dynamic ergodic divertor (DED) on the density limit in TEXTOR has been found. In Ohmic discharges, where without DED detachment normally arises at the density limit, a MARFE (multifaceted asymmetric radiation from the edge) develops when the DED is operated in a static regime. The threshold of the MARFE onset in the neutral beam heated plasmas is increased by applying 1 kHz ac DED at the high-field side. The theoretical predictions based on the parallel energy balance taking poloidal asymmetries into account agree well with the experimental observation.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut für Plasmaphysik (IPP)

Research Program(s):

1. Kernfusion und Plasmaforschung (E05)

Appears in the scientific report 2005
Notes: This version is available at the following Publisher URL: http://prl.aps.org

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