Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session PP11: Poster Session VI: In-Person, Hall A (2:00-3:30pm) and Virtual Poster Presentations (3:45-5:00pm)
MFE: Diagnostics; Edge and Pedestal; Stability; Heating; Transport, Turbulence
ASTRO: Astrophysical Plasma
2:00 PM - 5:00 PM
Wednesday, October 19, 2022
Room: Exhibit Hall A and Online
Abstract: PP11.00047 : Progress on a fast and robust solver for ideal MHD stability in stellarator geometry*
Presenter:
Caira Anderson
(Princeton Plasma Physics Lab)
Authors:
Caira Anderson
(Princeton Plasma Physics Lab)
Adelle Wright
(Princeton Plasma Physics Laboratory)
Benjamin Faber
(University of Wisconsin - Madison)
David Bindel
(Cornell University)
In this work, we present progress towards the development of a new code written in the Julia programming language for evaluating global (linear) ideal MHD stability in stellarator geometry. We demonstrate the code’s efficiency and robustness which is achieved through leveraging methods provided by high-performance mathematical libraries from the Julia community, such as matrix-free methods. The code builds on modern scientific program design practices to create a consistent application interface for use with various equilibrium representations, rather than being tied to a single, specific representation.
Efficient and accurate evaluation of linear ideal MHD stability is a crucial step in the design and analysis process for optimizing stellarator configurations for fusion energy. The linear ideal MHD stability problem can be expressed as a generalized eigenvalue problem involving the ideal MHD force operator. For strongly shaped 3D configurations such as stellarators, this problem must be solved numerically. By developing a new numerical tool for evaluating global (linear) ideal MHD stability in stellarator geometry, we make a vital contribution to the process of optimizing stellarator configurations for fusion energy.
*This work was supported by Department of Energy Contract No. DE-AC02-09-CH11466.
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