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Zero-dimensional relationships of tokamak scrape-off-layer parameters and the influence of these parameters on transport in the main plasma

A.Yu. Dnestrovskij, S.I. Krasheninnikov, P.N. Yushmanov1991年被引用 7Nuclear FusionIF 3出版社

The authors present a model for the plasma in the region outside the limiter which is suitable for describing the limiter and divertor configurations and could be used for a self-consistent study of plasma confinement in the main zone and at the edge. Integral zero-dimensional relationships are employed to describe the processes occurring in the scrape-off layer (SOL, wall plasma) region of a tokamak. This approach makes it possible to construct a model which takes into account, at least qualitatively, the principal effects that are important for the edge zone, such as ionization of neutrals, radiation, longitudinal heat transport by conduction and convection, and transverse Bohm diffusion. This model has been analysed for the main regimes of the SOL plasma. Because of the self-consistent modelling, it has been possible to describe the characteristic features of discharges in T-10 with regard to the density limit and the improved divertor confinement regimes in JT-60.

日本語訳

著者らは、リミター外部のプラズマ領域に対するモデルを提示する。このモデルは、リミター配置およびダイバータ配置の記述に適しており、主領域およびエッジ領域におけるプラズマ閉じ込めの自己無撞着な研究に使用できる。スクレイプオフ層(SOL、壁面プラズマ)領域で生じるプロセスを記述するために、積分型ゼロ次元関係式が用いられる。このアプローチにより、エッジ領域において重要となる主な効果、すなわち中性粒子の電離、放射、伝導および対流による長手方向の熱輸送、ならびに横断方向のボーム拡散を、少なくとも定性的に考慮したモデルを構築することが可能となる。このモデルは、SOLプラズマの主要なレジームについて解析されている。自己無撞着なモデリングにより、密度限界に関するT-10装置の放電特性、およびJT-60における改善されたダイバータ閉じ込め特性を記述することが可能となった。

装置

jt-60sa中精度(概要文一致)

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Scrape-off layer
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