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Plasma density at the current reversal in the STOR-1M tokamak with AC operation

O. Mitarai, A. Hirose, H.M. Skarsgard1992年被引用 21Nuclear FusionIF 3出版社

The plasma density behaviour in the STOR-1M tokamak with alternating current (AC) operation is described using the Murakami-Hugill diagram (1/qa, nR/Bt). At the current reversal, Ip = 0 (1/qa = 0), the plasma density remains finite and the Murakami parameter is nR/Bt = (0.66 ± 0.22) × 1018m-2.T-1. Gas puffing before the current reversal does not noticeably increase the plasma density at the current reversal, but allows AC operation with larger currents and improves its reproducibility. A qualitative explanation for the finite plasma density at the current reversal is given on the basis of a short circuit effect by the limiter

日本語訳

プラズマ密度の挙動は、交流運転中のSTOR-1Mトカマクにおいて、村上・ハギル図(1/qa、nR/Bt)を用いて記述される。電流反転時、Ip = 0(1/qa = 0)において、プラズマ密度は有限の値を保ち、村上パラメータはnR/Bt = (0.66 ± 0.22) × 10^18 m^-2・T^-1となる。電流反転前のガス入射は、電流反転時のプラズマ密度を顕著に増加させないが、より大きな電流での交流運転を可能にし、その再現性を向上させる。電流反転時における有限のプラズマ密度は、リミッターによる短絡効果に基づいて定性的に説明される。

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