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RF start-up and sustainment experiments on the TST-2@K spherical tokamak

A. Ejiri, Y. Takase, H. Kasahara, T. Yamada, K. Hanada, K. N. Sato, H. Zushi, K. Nakamura, M. Sakamoto, H. Idei2006年被引用 44Nuclear FusionIF 3出版社

Plasma start-up and sustainment without an inductive field have been studied in the TST-2@K spherical tokamak using high power RF sources (8.2 GHz/up to 170 kW). Steady state discharges with a plasma current of 4 kA were achieved. The line integrated density was about 3 × 1017 m−2 and the electron temperature was 160 eV. A truncated equilibrium was introduced to reproduce magnetic measurements. It was found that a positive Pfirsch–Schlüter current in the open field line region at the outboard boundary makes a significant contribution to the current. Insensitivity of the current to variations in the vertical field and RF power variation was also found.

日本語訳

誘導磁場を用いないプラズマの立ち上げと維持が、TST-2@K球状トカマクにおいて高周波電源(8.2 GHz/最大170 kW)を用いて研究された。プラズマ電流4 kAの定常放電が達成された。線積分密度は約3 × 10¹⁷ m⁻²であり、電子温度は160 eVであった。磁気測定を再現するために、切断平衡が導入された。外側境界の開いた磁力線領域における正のピルシュ・シュリューター電流が、電流に大きく寄与することが見出された。また、垂直磁場および高周波パワーの変動に対する電流の非感受性も見出された。

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