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The EPSILON experimental pseudo-symmetric trap

V.V. Arsenin, E.D. Dlougach, V.M. Kulygin, A.Yu. Kuyanov, A.A. Skovoroda, A.V. Timofeev, V.A. Zhil'tsov, A.V. Zvonkov2001年被引用 22Nuclear FusionIF 3出版社

Within the framework of the Adaptive Plasma Experiment (APEX) conceptual project, a trap with closed magnetic field lines, the Experimental Pseudo-Symmetric Closed Trap (EPSILON), is examined. The APEX project is aimed at theoretical and experimental development of the physical foundations for a steady state thermonuclear reactor designed on the basis of an alternative magnetic trap with tokamak-like large β plasma confinement. A discussion is given of thefundamental principle of pseudo-symmetry, which a magnetic configuration with tokamak-like plasma confinement should satisfy. Examples are given of calculations in the paraxial approximation of pseudo-symmetric curvilinear elements with a poloidal modulus B isoline. The EPSILON trap, consisting of two direct axisymmetric mirrors linked by two curvilinear pseudo-symmetric elements, is considered. To increase the equilibrium β, the plasma currents are short-circuited within curvilinear equilibrium elements. An untraditional scheme of MHD stabilization for a trap with closed field lines by use of axisymmetric mirrors with a divertor is analysed. The experimental installation EPSILON-One Mirror Element (OME), which is under construction for experimental investigation of stabilization by divertor, is discussed. The opportunity for applying the ECR method of plasma production in EPSILON-OME in conditions of high density and low magnetic field is examined.

日本語訳

「APEX」概念プロジェクトの枠組みの中で、閉じた磁力線を持つ閉じ込め装置である実験用擬似対称閉じ込め装置(EPSILON)が検討される。APEXプロジェクトは、トカマク型の大きなベータ値を有するプラズマ閉じ込めを備えた代替磁気閉じ込め装置に基づく定常核融合炉のための物理的基盤の理論的・実験的開発を目的としている。擬似対称性の基本原理について議論が行われる。これは、トカマク型のプラズマ閉じ込めを備えた磁気配位が満たすべき性質である。ポロイダル方向の磁場強度Bの等値線を有する擬似対称曲線要素の近軸近似における計算例が示される。EPSILON装置は、2つの直接軸対称ミラーと2つの擬似対称曲線要素によって連結された構造からなる。平衡ベータ値を増大させるために、曲線要素内でプラズマ電流が短絡される。閉じた磁力線を持つ閉じ込め装置における軸対称ミラーを用いた非伝統的なMHD安定化スキームが分析される。実験装置EPSILON-ONEミラー(OME)は、ダイバータによる安定化の実験的検証のために建設中であり、これについて議論が行われる。高密度・低磁場条件下でのEPSILON-OMEにおけるECR法を用いたプラズマ生成の適用可能性が検討される。

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