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Interactions of toroidally coupled tearing modes in the KSTAR tokamak

Gnan Kim, Gunsu S Yun, Minho Woo, Hyeon K Park, the KSTAR team2018年Plasma Physics and Controlled FusionIF 2.2出版社

The evolutions of toroidally coupled radially-distant and radially-adjacent tearing modes are visualized in 2D in detail on the Korea superconducting tokamak for advanced research. The coupled tearing modes are in-phase on the out-board mid-plane and become destabilized or compete with each other depending on their spatial separation. When two coupled tearing modes are far apart, both are increasingly destabilized. On the other hand, when they become close to each other, one becomes stabilized while the other becomes destabilized. In such cases, an additional tearing mode is often formed on outer rational flux surface and the three tearing modes compete. The competitions suggest that spatial overlap (merging) of coupled magnetic islands is difficult.

日本語訳

韓国超伝導トカマク先進研究装置における、トロイダル方向に結合した径方向に離れたテアリングモードと径方向に隣接したテアリングモードの進化を、2次元で詳細に可視化した。結合したテアリングモードは、装置外側中平面において同相であり、それらの空間的 separation に応じて、不安定化または互いに競合する。2つの結合したテアリングモードが離れている場合、両方ともますます不安定化する。一方、それらが互いに近接する場合、一方は安定化され、他方は不安定化される。このような場合、外側の有理磁気面上に追加のテアリングモードがしばしば形成され、3つのテアリングモードが競合する。この競合は、結合した磁気島の空間的重なり(合体)が困難であることを示唆している。

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kstar高精度(タイトル一致)

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Tearing modeKSTAR
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