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Mode structure and stability of toroidal Alfven eigenmodes in ITER and TFTR DT plasmas

J. Candy, M.N. Rosenbluth1995年被引用 22Nuclear FusionIF 3出版社

The small-inverse-aspect-ratio boundary layer approximation, which has been used previously to describe the analytic structure of a driven non-ideal toroidal Alfven eigenmodes (TAEs), is applied to a numerical stability calculation for the TAEs in ITER and TFTR plasmas. Away from TAE gaps (singular layers), zero beta cylindrical magnetohydrodynamics (MHDs) determines the generic structure of the outer solutions. Within each gap, a detailed kinetic treatment is used to include (i) modifications to the fluid equations arising from E// and finite Larmor radius, (ii) collisional damping from trapped electrons, (iii) collisionless (Landau) damping from passing ions and (iv) drive from finite-orbit-width fusion alpha particles and beam ions. The model is valid for arbitrary toroidal mode number and predicts the growth/damping rate of both the MHD-like TAE (that which is predicted by MHD theory) and the relevant kinetic TAEs

日本語訳

小逆アスペクト比境界層近似は、駆動された非理想トロイダルアルフヴェン固有モード(TAE)の解析的構造を記述するためにこれまで用いられてきたが、ITERおよびTFTRプラズマにおけるTAEの数値的安定性計算に適用される。TAEギャップから離れた領域では、ゼロベータ磁気流体力学(MHD)が外部解の一般的な構造を決定する。各ギャップ内では、詳細な運動論的取り扱いを用いて、(i)E∥および有限ラーマー半径に起因する流体方程式の修正、(ii)捕捉電子による衝突減衰、(iii)通過イオンによる無衝突(ランダウ)減衰、および(iv)有限軌道幅を持つ核融合アルファ粒子とビームイオンによる駆動を含める。このモデルは任意のトロイダルモード数に対して有効であり、MHD的TAE(MHD理論によって予測されるもの)と関連する運動論的TAEの両方の成長率・減衰率を予測する。

装置

iter高精度(タイトル一致)tftr高精度(タイトル一致)

wiki

ITERAlfvén waveAlfvén eigenmodeDeuterium-tritiumTFTRToroidal Alfvén Eigenmode
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