Papers › A new tool for two-dimensional field-reversed configuration equilibrium study
A new tool for two-dimensional field-reversed configuration equilibrium study
Haojie Ma, Huasheng Xie, Bihe Deng, Yukun Bai, Shikui Cheng, Yang Li, Bin Chen, Michel Tuszewski, Hanyue Zhao, Jinyuan Liu
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A new tool (GSEQ-FRC) for solving two-dimensional (2D) equilibrium of field-reversed configuration (FRC) based on fixed boundary and free boundary conditions with external coils included is developed. Benefiting from the two-parameter modified rigid rotor (MRR) radial equilibrium model and the numerical approaches presented by [Ma et al, Nucl. Fusion, 61, 036046, 2021], GSEQ-FRC are used to study the equilibrium properties of FRC quantitatively and will be used for fast FRC equilibrium reconstruction. In GSEQ-FRC, the FRC equilibrium can be conveniently determined by two parameters, i.e., the ratio between thermal pressure and magnetic pressure at the seperatrix βₛ, and the normalized scrape of layer (SOL) width δₛ. Examples with fixed and free boundary conditions are given to demonstrate the capability of GSEQ-FRC in the equilibrium calculations. This new tool is used to quantitatively study the factors affecting the shape of the FRC separatrix, revealing how the FRC changes from racetrack-like to ellipse-like.
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