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Poloidal localization of the explosive onset of edge localized modes

E. Trier, P. Hennequin, M. Maraschek, L. Giannone, B. Vanovac, the ASDEX Upgrade Team2024年Nuclear FusionIF 3出版社

In ASDEX Upgrade lower single null H-mode plasmas, the onset of the explosive phase of Edge Localized Modes (ELMs) is poloidally localized in the X-point/outer strike point (X/OSP) region. From this location, ELMs develop on average towards the low-field and high-field sides in typically . An associated magnetic activity localized in the X/OSP region is also observed in-between ELMs, at a lower level than at the ELM onset, and interpreted as being due to perturbed currents connected to the divertor target-s. Its broadband spectra typically extend up to –due to short-lived events of variable frequencies–and are dominated by toroidal mode numbers rotating in the counter-current direction.

日本語訳

ASDEX Upgrade lower single null Hモードプラズマにおいて、エッジ局在モード(ELM)の爆発的位相の開始は、X点/外側ストライク点(X/OSP)領域にポロイダル方向に局在している。この位置から、ELMは平均して低磁場側および高磁場側に向かって、典型的には . で発達する。関連する磁気活動も、X/OSP領域に局在して、ELM間に、ELM開始時よりも低いレベルで観測され、ダイバータターゲットに接続された摂動電流によるものと解釈される。その広帯域スペクトルは、典型的には、短時間で周波数が変動する事象により、最大 –まで広がり、反電流方向に回転する トロイダルモード数によって支配される。

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asdex-upgrade低精度(概要文一致)

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Edge localized mode
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