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arXiv · 2012.02077

Connection between quasi-symmetric magnetic fields and anisotropic pressure equilibria in fusion plasmas

Eduardo Rodriguez·Amitava Bhattacharjee
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Abstract

The stellarator as a concept of magnetic confinement fusion requires careful design to confine particles effectively. A design possibility is to equip the magnetic field with a property known as quasisymmetry. Though it is generally believed that a steady-state quasisymmetric equilibrium can only be exact locally (unless the system has a direction of continuous symmetry such as the tokamak), we suggest in this work that a change in the equilibrium paradigm can ameliorate this limitation. We demonstrate that there exists a deep physical connection between quasisymmetry and magnetostatic equilibria with anisotropic pressure, extending beyond the isotropic pressure equilibria commonly considered.

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Eduardo Rodriguez, Amitava Bhattacharjee. 2020-12-03. Connection between quasi-symmetric magnetic fields and anisotropic pressure equilibria in fusion plasmas. https://doi.org/10.1103/physreve.104.015213

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