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Magnetics control simulations for KSTAR plasmas

Hogun Jhang, Jin-Yong Kim2002年Fusion Engineering and DesignIF 1.7出版社

AbstractSimulation studies on magnetics control for the proposed Korea Superconducting Tokamak Advanced Research (KSTAR) plasmas are presented. Here, the magnetics control includes the fast time scale (∼10 ms) plasma position control, the slow time scale (∼1 s) plasma shape and current control, and the control of resistive wall modes (RWM). The plasma position control is realized by using two pairs of inner control coils inside KSTAR vacuum vessel. The plasma shape and current control is achieved by using superconducting poloidal field (PF) coils in KSTAR. The voltage limitations in PF coil power supplies are taken into account in the simulation. A set of 12 in-vessel control coils, which are mounted on the inner wall of KSTAR vacuum vessel, are used for the control of RWMs. The required feedback currents in in-vessel control coils for the stabilization of RWMs are estimated.

日本語訳

核融合研究用の韓国超伝導トカマク先進研究装置(KSTAR)プラズマに対する磁気制御のシミュレーション研究を提示する。ここで、磁気制御には、高速時間スケール(約10 ms)のプラズマ位置制御、低速時間スケール(約1秒)のプラズマ形状・電流制御、および抵抗性壁モード(RWM)の制御が含まれる。プラズマ位置制御は、KSTAR真空容器内に設置された2対の内部制御コイルを用いて実現される。プラズマ形状・電流制御は、KSTARの超伝導ポロイダル磁場(PF)コイルを用いて達成される。シミュレーションでは、PFコイル電源の電圧制限が考慮されている。RWMの制御には、KSTAR真空容器の内壁に取り付けられた12個の容器内制御コイルが使用される。RWMの安定化に必要な容器内制御コイルの要求帰還電流が推定される。

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