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Destabilization of TAE modes using ICRH in ASDEX Upgrade

D Borba, G D Conway, S Günter, G T A Huysmans, S Klose, M Maraschek, A Mück, I Nunes, S D Pinches, F Serra2004年Plasma Physics and Controlled FusionIF 2.2出版社

Toroidicity-induced Alfvén eigenmodes (TAEs) are destabilized in ASDEX Upgrade using ion cyclotron resonant heating (ICRH). Unstable TAEs are observed in the magnetic probes, reflectometer and soft x-ray cameras when the ICRH power exceeds PICRH > 2.5 MW in both conventional and advanced scenarios. The most unstable TAEs have toroidal mode numbers n = 3, 4, 5, 6, and experiments with reversed currents and magnetic fields have shown that the TAEs propagate in the co-current direction, i.e. in the ion diamagnetic drift direction, confirming that these modes are destabilized by the ICRH-produced energetic ions. The characterization of the TAE instability in ASDEX Upgrade is reported, focusing on the identification of the toroidal, poloidal and radial mode structures. The data are compared with the ideal magnetohydrodynamic model.

日本語訳

トロイダル性誘起アルヴェン固有モード(TAE)は、イオンサイクロトロン共鳴加熱(ICRH)を用いてASDEX Upgradeにおいて不安定化される。不安定なTAEは、従来型および先進的なシナリオの両方において、ICRHパワーがPICRH > 2.5 MWを超えると、磁気プローブ、反射計、および軟X線カメラで観測される。最も不安定なTAEはトロイダルモード数n = 3, 4, 5を持ち、反転電流および反転磁場を用いた実験により、TAEがコ電流方向、すなわちイオン反磁性ドリフト方向に伝播することが示され、これらのモードがICRHによって生成された高エネルギーイオンによって不安定化されることが確認された。ASDEX UpgradeにおけるTAE不安定性の特性評価が報告される。トロイダル、ポロイダル、およびラジアルモード構造の同定に焦点が当てられている。データは理想磁気流体力学モデルと比較される。

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asdex-upgrade高精度(タイトル一致)

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ASDEXASDEX UpgradeIon cyclotron heatingToroidal Alfvén Eigenmode
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