Abstract Details
Abstracts
Author: Mohammed Haque
Requested Type: Poster
Submitted: 2025-03-14 10:07:57
Co-authors: E.J Paul, R. Madan, W. Sengupta
Contact Info:
Columbia University
116th and Broadway
New York, NY 10027
United States
Abstract Text:
Optimizations for quasisymmetry, specifically quasi-axisymmetric (QA) and quasi-helical symmetry (QH), have led to stellarators with exceptional confinement properties [1]. Building on this success, we aim to extend this optimization to quasi-poloidal (QP) configurations. However, there are significant challenges in achieving QP symmetry. Optimizing for quasi-poloidal symmetry can be difficult due to the highly shaped geometries that arise, which often cause equilibrium codes to fail to converge. Despite these obstacles, quasi-poloidal stellarators hold promise, as they are expected to generate larger, sheared flows that could suppress microturbulence.
This study focuses on optimizing equilibrium for quasi-poloidal symmetry using DESC [2], aiming for the most precise solutions possible. We analyze trends in the converged results as well as conduct scans of mirror ratio, aspect ratio, elongation, and rotational transform.
[1] Landreman et al., (2021). https://joss.theoj.org/papers/10.21105/joss.03525
[2] D. Dudt et al., Phys. Plasmas 27, 102513 (2020) https://doi.org/10.1063/5.0020743
[3] D.A. Spong et al 2005 Nucl. Fusion 45 918
Characterization: 1.0
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