The paper derives linear Fourier-Zernike constraints that make global DESC equilibria match a prescribed near-axis expansion through second order in the flux-surface radius.
Constructing the space of quasisymmetric stellarators
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abstract
A simplified view of the space of optimised stellarators has the potential to guide and aid the design efforts of magnetic confinement configurations suitable for future fusion reactors. We present one such view for the class of quasisymmetric stellarators based on their approximate description near their centre (magnetic axis). The result is a space that captures existing designs and presents new ones, providing a common framework to study them. Such a simplified construction offers a basic topological approach, guided by certain theoretical and physical choices, which this paper presents in detail.
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physics.plasm-ph 1years
2025 1verdicts
CONDITIONAL 1representative citing papers
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Extending near-axis equilibria in DESC
The paper derives linear Fourier-Zernike constraints that make global DESC equilibria match a prescribed near-axis expansion through second order in the flux-surface radius.