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TFTR Initial operations

K M Young, M Bell, W R Blanchard, N Bretz, J Cecchi, J Coonrod, S Davis, H F Dylla, P C Efthimion, R Fonck1984年Plasma Physics and Controlled FusionIF 2.2出版社

TSTR (Tokamak Fusion Test Reactor) has operated since December 1982 with ohmically heated plasmas. Routine operation with feedback control of plasma current, position and density has been obtained for plasmas with Ip≃800 kA, a = 68 cm, R = 250 cm, and Bt=27 kG. A maximum plasma current of 1 MA was achieved with q≃2.5. Energy confinement times of ~150 msec were measured for hydrogen and deuterium plasmas with e = 2 x 1013 cm-3, Te(0) 2≃1.5 keV, Ti(0) = 1.5 keV and Zeff≃1 3. The preliminary results suqgest a size-cubed scaling from PLT, and are consistent with Alcator C scaling where T ∼ nR2a. Initial measurements ofplasma disruption characteristics indicate current decay rates of ∼ 800 kA in 8 ms which is within the TFTR design requirement of 3 MA in 3 ms.

日本語訳

TSTR(トカマク核融合試験炉)は、1982年12月以降、オーミック加熱プラズマにより運転されている。プラズマ電流、位置、密度のフィードバック制御による定常運転は、Ip≃800 kA、a = 68 cm、R = 250 cm、Bt = 27 kGのプラズマにおいて達成された。最大プラズマ電流1 MAは、q≃2で達成された。エネルギー閉じ込め時間は、e = 2×10^13 cm^-3、Te(0) ≃ 1.5 keV、Ti(0) = 1.5 keV、Zeff ≃ 1の水素および重水素プラズマにおいて、約150ミリ秒が測定された。予備的な結果は、PLTからのサイズ3乗スケーリングを示唆しており、Alcator Cスケーリング(T ∼ nR^2a)と一致している。プラズマ崩壊特性の初期測定では、電流減衰率は約800 kA/8 msであり、これはTFTRの設計要件である3 MA/3 msの範囲内である。

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