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Integrated modelling of ICRH in a quasi-axisymmetric stellarator

M. Jucker, W.A. Cooper, J.P. Graves2012年被引用 5Nuclear FusionIF 3出版社

We apply the code package SCENIC to a two field-period quasi-axisymmetric stellarator. Ion cyclotron resonance heating (ICRH) is applied both on the high- and low-field side to a 1% 3He minority in a deuterium plasma. It is shown that due to toroidal variations, the results are considerably different from similar tokamak studies. In particular, toroidal variations in power deposition and pressure are created and accentuated during radio frequency heating, such that modifications to the magnetic equilibrium depend on toroidal angle. We demonstrate that due to enhanced particle loss, low-field side heating is significantly less efficient than high-field side heating, and that toroidally trapped particles impose upper power limits for efficient radio frequency injection.

日本語訳

我々は、コードパッケージSCENICを2周期準軸対称ステラレーターに適用する。イオンサイクロトロン共鳴加熱(ICRH)は、重水素プラズマ中の1%の3Heマイノリティに対して、高磁場側と低磁場側の両方で適用される。トロイダル方向の変動により、結果が同様のトカマク研究とはかなり異なることが示される。特に、電力堆積と圧力のトロイダル方向の変動が生成され、無線周波数加熱中に増強されるため、磁気平衡の修正がトロイダル角に依存することになる。粒子損失の増大により、低磁場側加熱は高磁場側加熱よりも著しく効率が低く、トロイダル方向に捕捉された粒子が効率的な無線周波数入射の上限を課すことを実証する。

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