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Coupling properties of the JT-60 ICRF antenna during H-mode discharges

M. Saigusa, H. Kimura, T. Fujii, N. Kobayashi, S. Moriyama, H. Nakamura, JT-60 Team1989年被引用 8Nuclear FusionIF 3出版社

An increase of the coupling resistance of an ICRF 2 × 2 phased loop antenna array after H-mode transition was first observed in JT-60. The coupling resistance of the ICRF antenna decreases after H-mode transition in the (0,0) antenna phasing (toroidal phase difference), but it increases in the (π,0) antenna phasing (poloidal phase difference). This different behaviour can be explained by antenna-plasma coupling theory, taking the antenna phasings and the electron density profiles into account. The coupling resistance can be kept constant after H-mode transition by adjusting the toroidal wave number spectra of the antenna currents.

日本語訳

ICRF 2 × 2 位相ループアンテナアレイの結合抵抗の増加が、Hモード遷移後にJT-60で初めて観測された。ICRFアンテナの結合抵抗は、(0,0)アンテナ位相(トロイダル位相差)ではHモード遷移後に減少するが、(π,0)アンテナ位相(ポロイダル位相差)では増加する。この異なる挙動は、アンテナ位相と電子密度分布を考慮したアンテナ-プラズマ結合理論によって説明できる。結合抵抗は、アンテナ電流のトロイダル波数スペクトルを調整することで、Hモード遷移後も一定に保つことができる。

装置

jt-60sa高精度(タイトル一致)

wiki

H-modeIon cyclotron heatingJT-60Ion cyclotron antenna
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