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Lower hybrid driven long pulses in TORE SUPRA

G Tonon1993年Plasma Physics and Controlled FusionIF 2.2出版社

With lower hybrid current drive (LHCD), very long pulses can be obtained in TORE SUPRA. Volt-second saving studies by LHW assisted current ramp-up, current drive and electron heating are discussed. A 12 second stationary discharge with improved energy confinement time (40%) by peaking the current profile is presented with a central electron temperature up to Te(o) approximately 10 keV. A 1 minute flat top time duration discharge has been achieved with a plasma current Ip=1 MA:80% of this current is driven by LHW. During this discharge the core density is fed continuously by a deuterium gas puff indicating that the inner first wall is still pumping all along the shot. Finally results concerning the interaction of LHW with high density plasmas (peak density approximately 1020 m-3) and 3 MeV fusion protons are given.

日本語訳

低混合同軸駆動(LHCD)により、TORE SUPRAでは非常に長いパルスを得ることができる。LHW支援による電流立ち上げ、電流駆動、および電子加熱によるボルト秒消費の低減に関する研究について論じる。電流分布を尖鋭化することによりエネルギー閉じ込め時間が40%向上した12秒間の定常放電が、中心電子温度がTe(o)約10 keVに達する状態で提示される。プラズマ電流Ip=1 MAで1分間のフラットトップ時間を有する放電が達成され、この電流の80%はLHWによって駆動される。この放電中、コア密度は重水素ガスパフによって連続的に供給され、内側第一壁が全期間にわたり排気を継続していることを示している。最後に、LHWと高密度プラズマ(ピーク密度約1020 m-3)および3 MeVの核融合陽子との相互作用に関する結果を示す。

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