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Full conversion from ohmic to runaway electron driven current via massive gas injection in the TCV tokamak

J. Decker, G. Papp, S. Coda, B.P. Duval, U. Sheikh, P. Blanchard, D. Choi, C. Galperti, L. Calacci, D. Carnevale2022年被引用 5Nuclear FusionIF 3出版社

Full conversion from ohmic to runaway electron (RE) driven current was observed in the tokamak à configuration variable (TCV) following massive injection of neon through a disruption mitigation valve into a low-density limited circular plasma. Following a partial disruption, a stable 200 kA RE beam is maintained for more than 1 s. Controlled ramp-down of the RE beam with adjustable decay rate was demonstrated. Control of the beam vertical position was achieved down to a RE current of 20 kA. RE beam formation is observed in elongated plasma configurations up to κ = 1.5. A reproducible scenario for RE beam generation without loss of circulating current is of particular interest for disruption modelling applications.

日本語訳

オーミック電流から逃走電子(RE)駆動電流への完全な変換が、トカマク・ア・コンフィギュレーション・バリアブル(TCV)において、低密度リミター円形プラズマへのディスラプション緩和バルブを通したネオン大量注入後に観測された。部分ディスラプション後、安定な200 kAのREビームが1秒以上維持された。調整可能な減衰率によるREビームの制御されたランプダウンが実証された。ビームの垂直位置制御は、RE電流20 kAまで達成された。REビーム形成は、κ = 1.5までの細長いプラズマ配位で観測された。循環電流の損失を伴わないREビーム生成の再現可能なシナリオは、ディスラプションモデリング応用にとって特に重要である。

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TCVRunaway electronOhmic heatingMassive gas injection
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