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Influence of various physics phenomena on fast wave current drive in tokamaks

E.F. Jaeger, D.B. Batchelor, D.C. Stallings1993年被引用 35Nuclear FusionIF 3出版社

The authors present an analysis of the influence of various physics phenomena (which are not necessarily independent) on current drive performance in tokamaks. Such phenomena include diffraction and other non-geometrical optics processes, k|| modification, and multiple-pass absorption as well as antenna characteristics such as recessed cavity and septa geometry, poloidal extent and poloidal location of the current straps. The two-and-one-half-dimensional (21/2-D) full-wave code PICES is used for modelling ion cyclotron resonance heating and current drive. PICES is based on poloidal mode and reduced-order expansions. By 21/2-D, we mean that 3-D wave fields are calculated in axisymmetric geometry (2-D solution domain - ρ,θ), while the correct toroidal dependence of the antenna source currents is obtained from a 2-D (ρ ,ϕ) recessed antenna code. The calculation includes the poloidal and toroidal structure of the antenna, modification of the k|| spectrum due to the poloidal magnetic field and a complete solution for E||. A semi-analytic model for current drive, including trapped electron effects, is employed. These calculations are used extensively to model fast wave current drive in DIII-D, ITER and other tokamaks

日本語訳

著者らは、トカマクにおける電流駆動性能に対する様々な物理現象(必ずしも独立ではない)の影響の解析を提示する。そのような現象には、回折やその他の非幾何光学過程、k|| の修正、多重通過吸収、ならびに後退キャビティやセプタ形状、ポロイダル方向の広がり、電流ストラップのポロイダル方向の位置などのアンテナ特性が含まれる。イオンサイクロトロン共鳴加熱および電流駆動のモデリングには、2次元半(21/2次元)全波コードPICESが使用される。PICESは、ポロイダルモードおよび低次展開に基づく。21/2次元とは、3次元波動場が軸対称幾何学(2次元解領域 - ρ,θ)で計算される一方、アンテナソース電流の正しいトロイダル依存性が2次元(ρ,φ)後退アンテナコードから得られることを意味する。この計算には、アンテナのポロイダルおよびトロイダル構造、ポロイダル磁場によるk|| スペクトルの修正、ならびにE|| の完全な解が含まれる。捕捉電子効果を含む半解析モデルが電流駆動に用いられる。これらの計算は、DIII-D、ITER、およびその他のトカマクにおける高速波電流駆動のモデリングに広く使用されている。

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diii-d中精度(概要文一致)iter中精度(概要文一致)

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Fusion Advanced Studies TorusCurrent driveWave current drive
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