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TAE internal structure through high-resolution soft x-ray measurements in ASDEX-Upgrade

P. Piovesan, V. Igochine, P. Lauber, K. Sassenberg, A. Flaws, M. García-Muñoz, S. Günter, M. Maraschek, L. Marrelli, P. Martin2008年被引用 10Nuclear FusionIF 3出版社

The internal structure of toroidal Alfvén eigenmodes (TAEs) excited in ASDEX-Upgrade plasmas with ion cyclotron resonance heating (ICRH) has been measured through a high-resolution multichord soft x-ray diagnostic. The radial profiles of multiple TAEs are compared with predictions of the linear resistive magnetohydrodynamic code CASTOR and the nonperturbative gyrokinetic code LIGKA and reasonably good agreement is found. The evolution of the TAE radial profiles could be followed in time, both across sawteeth in pure ICRH discharges and in discharges with different types of transitions from L-mode to H-mode obtained with a combination of ICRH and neutral beam injection.

日本語訳

ASDEX-Upgradeにおけるイオンサイクロトロン共鳴加熱(ICRH)によって励起されたトロイダル・アルヴェン固有モード(TAE)の内部構造は、高分解能マルチコード軟X線診断装置を用いて計測された。複数のTAEの動径プロファイルは、線形抵抗性磁気流体力学コードCASTORおよび非摂動ジャイロ運動論コードLIGKAによる予測と比較され、合理的に良い一致が見られた。TAEの動径プロファイルの時間発展は、純粋なICRH放電における鋸歯状振動を横切る場合と、ICRHと中性粒子ビーム入射の組み合わせによって得られたLモードからHモードへの異なる遷移を伴う放電の場合の両方において追跡された。

装置

asdex-upgrade高精度(タイトル一致)

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ASDEXASDEX UpgradeSoft x-rayToroidal Alfvén Eigenmode
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