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Boundary layer physics considerations for the TEXTOR dynamic ergodic divertor experiment

T.E. Evans1997年Fusion Engineering and DesignIF 1.7出版社

AbstractThe proposed arrangement of the TEXTOR dynamic ergodic divertor coils is quite different from that of previous stochastic boundary layer experiments. These coils are located on the high field side and have continuous helical windings. The basic resonant magnetic field line structure is not substantially affected by the location of the perturbation coils but the non-resonant near field effects, such as those related to helical divertor effects and the interaction of the near field with the stochastic layer, are different. Differences with the TORE SUPRA ergodic divertor coils are discussed. Based on these differences we expect that the plasma positioning will play an important role in: (i) the onset of MARFE's; (ii) the impurity screening efficiency; (iii) the onset of disruptions; and (iii) the transport properties of the boundary layer plasma.

日本語訳

提案されたTEXTOR動的エルゴディックダイバータコイルの配置は、従来の確率的境界層実験のものとはかなり異なる。これらのコイルは高磁場側に配置され、連続した螺旋巻線を有する。基本共鳴磁力線構造は、摂動コイルの位置によって本質的に影響を受けないが、非共鳴近接場効果、例えばエルゴディックダイバータ効果や確率的層との近接場相互作用に関連するものは異なる。TORE SUPRAエルゴディックダイバータコイルとの相違点について議論する。これらの相違点に基づき、プラズマ位置制御が以下の点で重要な役割を果たすと予想される:(i) MARFEの発生;(ii) 不純物遮蔽効率;(iii) ディスラプションの発生;および(iii) 境界層プラズマの輸送特性。

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DivertorTEXTORErgodic divertor
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