Electron root optimisation for stellarator reactor designs
Plasma Physics
2025-01-29 v1
Abstract
In this work, we propose a method of optimising stellarator devices to favour the presence of an electron root solution of the radial electric field. Such a solution can help avoid heavy impurity accumulation, improve neoclassical thermal ion confinement and helium ash exhaust and possibly reduce turbulence. This study shows that an optimisation for such a root is possible in quasi-isodynamic stellarators. Examples are shown for both vacuum and finite plasma pressure configurations.
Cite
@article{arxiv.2405.12058,
title = {Electron root optimisation for stellarator reactor designs},
author = {E. Lascas Neto and R. Jorge and C. D. Beidler and J. Lion},
journal= {arXiv preprint arXiv:2405.12058},
year = {2025}
}