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The basics of spherical tokamaks and progress in European research

V K Gusev, F Alladio, A W Morris2003年Plasma Physics and Controlled FusionIF 2.2出版社

When the aspect ratio of a tokamak (A = R/a) decreases significantly, there is a transformation of the well studied tokamak toroidal magnetic configuration into the spherical tokamak (ST) configuration. This configuration has high natural plasma elongation and triangularity and other unique equilibrium and stability properties of ST configuration, which are discussed in this paper.European research into ST physics is well advanced in spite of the young age of this branch of fusion science. An overview of selected experimental and theoretical results obtained at Ioffe, Culham and Frascati is given with the emphasis on their complementarity and links to the main stream of tokamak research, such as ITER. An outline of the basic ST advantages and the potential of ST research for new insights into magnetic confinement is also given. More detailed descriptions of recent advances in ST theory and experiment may be found in the invited papers by Akers and Ono in the proceedings of this conference.

日本語訳

トカマクのアスペクト比(A = R/a)が大幅に減少すると、よく研究されたトカマクのトロイダル磁気配位は、球状トカマク(ST)配位へと変形する。この配位は、高い自然プラズマ伸長度と三角形度、およびその他の独自の平衡・安定性特性を有しており、これらについて本論文で論じる。欧州におけるST物理学の研究は、この核融合科学の新しい分野の歴史が浅いにもかかわらず、高度に進展している。イオッフェ研究所、カラム研究所、フラスカティ研究所で得られた代表的な実験的・理論的成果の概要を示し、それらの相補性と、ITERなどの主流のトカマク研究との関連性に焦点を当てる。また、STの基本的な利点と、磁気閉じ込めに関する新たな知見をもたらすST研究の可能性についても概説する。STの理論と実験における最近の進展の詳細については、本会議の論文集に掲載されたエイカーズ氏と小野氏の招待論文を参照されたい。

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Spherical tokamak
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