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Stellarator coils

Buildable coils whose field matches a target plasma boundary (placeholder)

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Adjoint gradients with L-BFGS and a curvature penalty
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@curator curator Start adjoint-lbfgs befdf36 · 2 weeks ago 3 commits
routes Start adjoint-lbfgs 2 weeks ago
README.md State the problem (placeholder) 2 weeks ago
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README.md

Stellarator coils

Placeholder. This problem is here so the problem panel can be tried out. Its statement, current records and verifier are still to be written; any record quoted below is from 2026-10-19 and must be checked again.

Problem

Given a target plasma boundary, find closed coil curves, a few dozen Fourier coefficients each, whose Biot–Savart field is tangent to the boundary while length, curvature and coil spacing stay buildable. Scoring follows Princeton’s SIMSOPT and the ConStellaration benchmark; the target and the weights are still to be fixed.