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Control of the resistive wall mode in advanced tokamak plasmas on DIII-D

A.M. Garofalo, E.J. Strait, J.M. Bialek, E.D. Fredrickson, M. Gryaznevich, T.H. Jensen, L.C. Johnson, R.J. La Haye, G.A. Navratil, E.A. Lazarus2000年被引用 50Nuclear FusionIF 3出版社

Resistive wall mode (RWM) instabilities are found to be a limiting factor in advancedtokamak regimes with low internal inductance. Even small amplitude modes can affect therotation profile and the performance of these ELMing H mode discharges. Although completestabilization of the RWM by plasma rotation has not yet been observed, several dischargeswith increased beam momentum and power injection sustained good steady state performancefor record durations. The first investigation of active feedback control of the RWM hasshown promising results: the leakage of radial magnetic flux through the resistive wall canbe successfully controlled and the duration of the high beta phase can be prolonged. Theresults provide a comparative test of several approaches to active feedback control, andare being used to benchmark the analysis and computational models of active control.

日本語訳

抵抗性壁モード(RWM)不安定性は、低い内部インダクタンスを有する先進トカマク領域における制限要因であることが見出されている。小さな振幅のモードでさえ、ELMを伴うHモード放電の回転分布と性能に影響を与え得る。プラズマ回転によるRWMの完全な安定化はまだ観測されていないが、ビーム運動量とパワー入射を増加させたいくつかの放電は、記録的な時間にわたって良好な定常状態性能を維持した。RWMの能動帰還制御の最初の調査は有望な結果を示した:抵抗性壁を通る動径磁束の漏れをうまく制御でき、高ベータ位相の持続時間を延長できることである。これらの結果は、能動帰還制御へのいくつかのアプローチの比較試験を提供し、能動制御の解析・計算モデルの検証に使用されている。

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diii-d高精度(タイトル一致)

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DIII-DResistive wall modeAdvanced tokamak
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