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Scaling of energy confinement time in the Globus-M spherical tokamak

G S Kurskiev, V K Gusev, N V Sakharov, N N Bakharev, A D Iblyaminova, P B Shchegolev, G F Avdeeva, E O Kiselev, V B Minaev, E E Mukhin2017年Plasma Physics and Controlled FusionIF 2.2出版社

The paper is devoted to an energy confinement study at the Globus-M spherical tokamak (ST). Experiments were performed in single null divertor configuration with elongation as high as 1.8–1.9 for variable plasma current and fixed toroidal magnetic field. The confinement time (τE) dependence on density for ohmic-heated (OH) deuterium plasma is presented. It was found that τE rises linearly with plasma current in H-mode with pure ohmic heating. Pronounced electron and ion heating was achieved in discharges with neutral beam injection at a moderate density level. The dependence of τE on absorbed power was weak.

日本語訳

本論文は、Globale-M球状トカマク(ST)におけるエネルギー閉じ込め研究に関するものである。実験は、単一ヌルダイバータ配位、伸長比1.8〜1.9、プラズマ電流を可変とし、トロイダル磁場を固定して実施された。オーミック加熱(OH)された重水素プラズマにおける閉じ込め時間(τE)の密度依存性を示す。純粋なオーミック加熱によるHモードにおいて、τEはプラズマ電流とともに直線的に増加することが見出された。中程度の密度レベルでの中性粒子ビーム入射により、顕著な電子加熱およびイオン加熱が達成された。吸収パワーに対するτEの依存性は弱かった。

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Spherical tokamakEnergy confinementConfinement timeGlobus-M
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