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Numerical analysis of helium ash removal by using ICRH-driven ripple transport

K Hamamatsu, C S Chang, T Takizuka, M Azumi, T Hirayama, S Cohen, T Tani1998年Plasma Physics and Controlled FusionIF 2.2出版社

Helium ash removal across the last closed flux surfaces in a deuterium-tritium fuelled tokamak plasma is studied using an orbit-following Monte Carlo simulation. Ripple transport of helium ash ions is induced by ion cyclotron resonance heating (ICRH) of short-lived ions, which are produced by charge exchange of with incoming neutral species. It is found that the required ICRH power in an ITER grade tokamak plasma is 10-15 MW and the helium transport to the first wall is localized within an area given by 1.3 m in the toroidal direction and 0.7 m in the poloidal direction.

日本語訳

重水素-トリチウム燃料トカマクプラズマにおける最終閉鎖磁気面を横切るヘリウム灰の除去を、軌道追従モンテカルロシミュレーションを用いて研究した。リップル輸送によるヘリウム灰の輸送は、入射中性粒子との荷電交換によって生成される短寿命のイオンに対するイオンサイクロトロン共鳴加熱(ICRH)によって誘起される。ITER級トカマクプラズマにおいて必要なICRHパワーは10〜15 MWであり、ヘリウムの第一壁への輸送は、トロイダル方向に1.3 m、ポロイダル方向に0.7 mの領域に局在することが見出された。

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Ion cyclotron heatingHelium
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