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Improved α-particle confinement in stellarators with poloidally closed contours of the magnetic field strength

M.I. Mikhailov, V.D. Shafranov, A.A. Subbotin, M.Yu. Isaev, J. Nührenberg, R. Zille, W.A. Cooper2002年被引用 26Nuclear FusionIF 3出版社

The possibility of fulfilling the condition of poloidal closure of the contours of the second adiabatic invariant for all reflected particles is studied for systems with poloidally closed contours of the magnetic field B on the magnetic surfaces through computational stellarator optimization. It is shown that by adjusting the geometry this is possible in a major fraction of the plasma volume. The most salient characteristic (as compared to previous quasi-isodynamic configurations) is a magnetic axis whose curvature vanishes in all cross sections with an extremum of B on the magnetic axis and renders possible a three-dimensional structure of B with unprecedentedly high collisionless α-particle confinement.

日本語訳

第二断熱不変量の等高線がすべての反射粒子に対してポロイダル閉鎖の条件を満たす可能性が、磁気面上で磁場Bのポロイダル閉鎖等高線を持つ系について、計算ステラレータ最適化を通じて研究される。幾何形状を調整することにより、これがプラズマ体積の大部分で可能であることが示される。最も顕著な特徴(以前の準等力学配置と比較して)は、磁気軸上のBの極値を持つすべての断面で曲率が消える磁気軸であり、前例のない高い無衝突α粒子閉じ込めを備えたBの三次元構造を可能にする。

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