Abstract Details
Abstracts
Author: Djin Patch
Requested Type: Consider for Invited
Submitted: 2025-03-13 23:37:48
Co-authors: T. Qian, R. Jorge, X. Chu
Contact Info:
UW Madison
Thomas C Chamberlin Hall
Madison, WI 53706
USA
Abstract Text:
The magnetic confinement approach to fusion typically uses closed toroidal fields to confine charged particles; however, some of the earliest fusion experiments were linear open magnetic mirrors. In both cases, non-axisymmetric fields can be used to provide stability which in toroidal designs resulted in the stellarator approach to fusion, and in linear designs is seen in the use of quadrupole fields. In both cases, this shaping provides MHD stability at the cost of increased radial particle drift. It has been 74 years since the stellarator design was proposed, and in the last decade computational tools have advanced to the point where coil shapes can be designed to create MHD stable stellarators with low particle drift. We seek to apply these advances to linear systems and optimize coils that create MHD stable, low-drift magnetic mirrors. This is done by modifying the stellarator optimization code SIMSOPT to target a linear design. We optimize coils by targeting a proposed MHD stable magnetic mirror equilibrium with no radial particle drift and no field line curvature. We present a framework for optimizing non-axisymmetric mirrors at various mirror ratios and total lengths. We will show benchmarks of axisymmetric and non-axisymmetric mirrors and results for non-axisymmetric mirrors with improved MHD stability and reduced radial drifts.
Characterization: 1.0
Comments: