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Nonlinear growth of magnetic islands by passing fast ions in NSTX

J Yang, E D Fredrickson, M Podestà, F M Poli2022年Plasma Physics and Controlled FusionIF 2.2出版社

The growth of magnetic islands in NSTX is modeled successfully, with the consideration of passing fast ions. It is shown that a good quantitative agreement between simulation and experimental measurement can be achieved when the uncompensated cross-field current induced by passing fast ions is included in the island growth model. The fast ion parameters, along with other equilibrium parameters, are obtained self-consistently using the TRANSP code with the assumptions of the 'kick' model (Podestà et al 2017 Plasma Phys. Control. Fusion59 095008). The results show that fast ions can contribute to overcoming the stabilizing effect of polarization current for magnetic island growth.

日本語訳

NSTXにおける磁気島の成長は、高速イオンを考慮して首尾よくモデル化された。高速イオンによって誘起される補償されない横断電流を磁気島成長モデルに含めた場合に、シミュレーションと実験の間に良好な定量的一致が得られることが示された。高速イオンのパラメータは、他の平衡パラメータとともに、「キック」モデルの仮定を用いたTRANSPコードによって自己無撞着に得られた(Podestàら 2017 Plasma Phys. Control. Fusion 59 095008)。その結果は、高速イオンが磁気島成長に対する分極電流の安定化効果を克服することに寄与し得ることを示している。

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nstx-u高精度(タイトル一致)

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Fusion Advanced Studies TorusEnergetic ionNSTXMagnetic islands
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