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Energetic particle effects as an explanation for the low frequencies of Alfvén modes in the DIII-D tokamak

N.N. Gorelenkov, W.W. Heidbrink2002年被引用 27Nuclear FusionIF 3出版社

During beam injection in the DIII-D tokamak, modes with lower frequencies than expected for toroidicity induced Alfvén eigenmodes (TAEs) are often observed. The experimental `TAE' frequency is often ≈0.8 of the nominal theoretical frequency of the TAE, fTAE, while the typical frequency of beta induced Alfvén eigenmodes (BAEs) is (0.2-0.4)fTAE. An analysis is presented of an unstable discharge with a high n stability code, HINST, that includes the effect of energetic ions on mode frequency. The analysis shows that the experimental `TAE' and `BAE' could be resonant branches of the TAE and the kinetic ballooning mode, respectively.

日本語訳

DIII-Dトカマクへのビーム入射中に、トロイダル性誘起アルヴェン固有モード(TAE)に対して予想される周波数よりも低い周波数のモードがしばしば観測される。実験的な「TAE」周波数は、TAEの公称理論周波数fTAEの≈0.8倍であることが多く、一方、ベータ誘起アルヴェン固有モード(BAE)の典型的な周波数は(0.2-0.4)fTAEである。高次のn安定性コードHINSTを用いた不安定放電の解析が提示されており、このコードは高エネルギーイオンがモード周波数に及ぼす影響を含んでいる。この解析は、実験的な「TAE」および「BAE」が、それぞれTAEおよび運動論的バルーニングモードの共鳴分枝であり得ることを示している。

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diii-d高精度(タイトル一致)

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DIII-DAlfvén waveEnergetic particles
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