Journal Article

PreJuSER-1541

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Suppression of runaway electrons by resonant magnetic perturbations in TEXTOR disruptions

Lehnen, M.FZJ* ; Abdullaev, S. S. ; Bozhenkov, S. A. ; Jakubowski, M. W.

2008
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/7180  doi:10.1103/PhysRevLett.100.255003

Abstract: The generation of runaway electrons in the international fusion experiment ITER disruptions can lead to severe damage at plasma facing components. Massive gas injection might inhibit the generation process, but the amount of gas needed can affect, e.g., vacuum systems. Alternatively, magnetic perturbations can suppress runaway generation by increasing the loss rate. In TEXTOR disruptions runaway losses were enhanced by the application of resonant magnetic perturbations with toroidal mode number n=1 and n=2. The disruptions are initiated by fast injection of about 3x10(21) argon atoms, which leads to a reliable generation of runaway electrons. At sufficiently high perturbation levels a reduction of the runaway current, a shortening of the current plateau, and the suppression of high energetic runaways are observed. These findings indicate the suppression of the runaway avalanche during disruptions.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Plasmaphysik (IEF-4)

Research Program(s):

1. Fusion (P13)

Appears in the scientific report 2008

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Database coverage:
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