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Torsatron without toroidal field coils II. configuration ℓ = 2

D. Marty, E.K. Maschke, J. Touche, C. Gourdon1972年被引用 12Nuclear FusionIF 3出版社

As a continuation of a previous study, the magnetic configuration of the torsatron with ℓ = 2 helical windings and no toroidal field coils is investigated. A useful volume with closed toroidal magnetic surfaces exists only for sufficiently large pitch angles of the helical windings (> 45°). With increasing pitch angle the rotational transform on the magnetic axis decreases, and high shear is obtained (Θ ∼ 1). In this case, the mirror ratio along the field lines is relatively high (Bmax/Bmin > 1.5). If we require low mirror ratio (Bmax/Bmin < 1.5) the ℓ = 2 configuration is limited to low shear, in contrast to the previously studied case ℓ = 3 which has considerable shear even when the mirror ratio is low.

日本語訳

先行研究の続きとして、トロイダル磁場コイルを持たないℓ = 2ヘリカル巻線を有するトルサトロンの磁場配位を調査した。閉じた磁気面を有する有効体積は、ヘリカル巻線のピッチ角が十分に大きい場合(> 45°)にのみ存在する。ピッチ角が増加するにつれて、磁気軸上の回転変換は減少し、高い磁気シア(Θ ∼ 1)が得られる。この場合、磁力線に沿ったミラー比は比較的高くなる(Bmax/Bmin > 1.5)。低いミラー比(Bmax/Bmin < 1.5)を要求する場合、ℓ = 2配位は低い磁気シアに限定される。これは、ミラー比が低い場合でもかなりの磁気シアを有する先行研究のℓ = 3の場合とは対照的である。

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