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Feedback control of vertical plasma position in non-circular tokamak TNT-A

Y. Nagayama, M. Naito, Y. Ueda, Y. Ohki, K. Miyamoto1984年被引用 13Nuclear FusionIF 3出版社

An experimental investigation of feedback control of the vertical plasma position in the non-circular tokamak TNT-A is described. When the loop gain of the feedback control system is high, the plasma displacement is small, but the saturation of the servo-amplifier limits the maximum loop gain. It is observed that the stable region in the diagram of the loop gain and the n-index (g-n diagram) shrinks as the n-index approaches a critical value. The experimental results are consistent with the theoretical model in which the effect of the toroidal gaps in the resistive shell and the vacuum vessel is considered.

日本語訳

トカマクTNT-Aにおける非円形プラズマの垂直位置のフィードバック制御に関する実験的調査について述べる。フィードバック制御系のループ利得が高い場合、プラズマ変位は小さくなるが、サーボ増幅器の飽和がループ利得の最大値を制限する。ループ利得とn指数の図(g-n図)における安定領域は、n指数が臨界値に近づくにつれて縮小することが観測された。実験結果は、抵抗性シェルと真空容器におけるトロイダルギャップの影響を考慮した理論モデルと一致する。

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