Connection between quasisymmetric magnetic fields and anisotropic pressure equilibria in fusion plasmas
Publication Year
2021
Type
Article
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.
Publication Status
In Press
Journal
Phys. Rev. E
Volume
104
Pages
015213
Date Published
07/2021