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Analytical models of axisymmetric toroidal magnetic fields withnon-circular flux surfaces

V A Yavorskij, K Schoepf, Zh N Andrushchenko, B H Cho, V Ya Goloborodko, S N Reznyk2001年Plasma Physics and Controlled FusionIF 2.2出版社

Axisymmetric toroidal magnetic configurations relevant to current andfuture tokamak experiments are analytically modelled taking into account anarbitrary aspect ratio, noncircularity and up-down asymmetry of fluxsurface shapes. It is shown that equilibrium tokamak magnetic fields can besatisfactorily described using only four geometric parameters, whichdetermine the shape and position of the flux surfaces. These are theShafranov shift, the elongation, and the parameters of triangularity and ofup-down asymmetry. To cover the variety of observed flux surface shapes,three different analytical expansions are provided. Comparison of themodelled with the equilibrium flux surfaces in NSTX (Princeton), JET(Abingdon) and TCV (Lausanne) demonstrates good coincidence.

日本語訳

現在および将来のトカマク実験に関連する軸対称トロイダル磁気配位は、任意のアスペクト比、非円形度、および磁気面形状の上下非対称性を考慮して解析的に記述される。平衡トカマク磁場は、磁気面の形状と位置を決定するわずか4つの幾何学的パラメータを用いて満足に記述できることが示される。これらは、シャフラノフシフト、伸長度、および三角変形度と上下非対称性のパラメータである。観測される磁気面形状の多様性をカバーするために、3つの異なる解析的展開が提供される。それらとNSTX(プリンストン)、JET(アビンドン)、TCV(ローザンヌ)における平衡磁気面との比較は、良好な一致を示す。

装置

jet中精度(概要文一致)nstx-u中精度(概要文一致)
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