JIPP T-II 改造用変流器の有効磁束に関するモデル実験

概要

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It has been planned to modify JIPP T-II device for high power additional heating. In this plan, we have an improved two-pair arrangement of primary windings set more closely to a plasma column instead of the original one-pair windings. We have studied the effectiveness of the improved arrangement experimentally in comparison with the original one of primary windings, using a 1/5 scale model. The scale model consists of an iron core, one or two pairs of primary windings and a plasma simulator. The results of the experiments on the improved arrangement are followings : (1) In the modified configuration the available flux swing is 2.4 times as much as that in the present one in the case of no saturation. (2) When the full saturation is permitted, the maximum flux swing in the former increases by 50% in comparison with that in the latter. (3) The available flux swing may increase by 17% if the iron-core is inversely magnetized to the saturation level a prior to the direct swing. (4) In the modified configuration, the strength of the vertical field due to the iron-core is less than that in the present one, and the decay index in the former is greater than that in the latter.
核融合科学研究所の論文