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Properties of a new quasi-axisymmetric configuration

S.A. Henneberg, M. Drevlak, C. Nührenberg, C.D. Beidler, Y. Turkin, J. Loizu, P. Helander2019年被引用 71Nuclear FusionIF 3出版社

A novel, compact, quasi-axisymmetric configuration is presented which exhibits low fast-particle losses and is stable to ideal magnetohydrodynamic (MHD) instabilities. The design has fast-particle loss rates below 8% for flux surfaces within the half-radius, and is shown to have a MHD stability limit of a normalized pressure of , where is volume averaged. The flux surfaces at various plasma betas and currents as calculated using the SPEC equilibrium code (Loizu et al 2016 Phys. Plasmas23 112505) are presented. Neoclassical transport coefficients are shown to be similar to an equivalent tokamak, with a distinct banana regime at half-radius. An initial coil design study is presented to assess the feasibility of this configuration as a fusion-relevant experiment.

日本語訳

新規のコンパクトな準軸対称配位が提示され、これは低い高速粒子損失を示し、理想磁気流体力学(MHD)不安定性に対して安定である。この設計は、半半径内の磁束面に対して8%未満の高速粒子損失率を有し、体積平均された である規格化圧力のMHD安定性限界を持つことが示されている。SPEC平衡コード(Loizu et al 2016 Phys. Plasmas23 112505)を用いて計算された、様々なプラズマベータおよび電流における磁束面が提示される。新古典輸送係数は、等価なトカマクと類似していることが示され、半半径において明確なバナナ領域を有する。この配位の核融合関連実験としての実現可能性を評価するための初期コイル設計研究が提示される。

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