Computation of multi-region, relaxed magnetohydrodynamic equilibria with prescribed toroidal current profile

被引：9

作者：

Baillod, A. ^{[1
]}

Loizu, J. ^{[1
]}

Qu, Z. S. ^{[2
]}

Kumar, A. ^{[2
]}

Graves, J. P. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Swiss Plasma Ctr, CH-1015 Lausanne, Switzerland

[2] Australian Natl Univ, Math Sci Inst, Canberra, ACT 2601, Australia

来源：

JOURNAL OF PLASMA PHYSICS | 2021年 / 87卷 / 04期

关键词：

plasma confinement; fusion plasma; PLASMA; PRESSURE; GENERATION; RELAXATION;

D O I：

10.1017/S0022377821000520

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The stepped-pressure equilibrium code (SPEC) (Hudson et al., Phys. Plasmas, vol. 19, issue 11, 2012, 112502) is extended to allow the computation of multi-region, relaxed magnetohydrodynamics (MRxMHD) equilibria at prescribed toroidal current profile. Toroidal currents are expressed in the framework of the MRxMHD theory, exhibiting spatial separation between pressure driven and externally driven currents. Additionally, analytical force balance derivatives at constant toroidal current are deployed in order to maintain SPEC's advantageous speed. The newly implemented capability is verified in screw pinch and classical stellarator geometries, and is applied to obtain the equilibrium beta-limit of a classical stellarator without net toroidal currents. This new capability opens the possibility to study the effect of toroidal current on three-dimensional equilibria with the SPEC code.

引用

页数：23

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