DESC

v0.7.0 Github Commits New Features Add implementation of Surface.compute_curvature. Add return_data flag to plotting functions to return dictionary of plotted data. Add computation of beta, average B, surface curvature, magnetic field derivatives, and others. Full list at https://desc-docs.readthedocs.io/en/stable/variables.html Modify Surface classes to always orient surfaces correctly to give the equilibrium a positive Jacobian. This means DESC will always use a right handed coordinate system in both cylindrical and flux coordinates. Previously the orientation of the flux coordinate system would depend on the boundary parameterization. New utility function desc.compat.ensure_positive_jacobian for converting previously saved equilibria to a right handed coordinate system. Major Changes Refactored backend compute functions to calculate dependencies recursively. This should make it much easier to add new quantities, and reduces compilation times by 50-70% Minor Changes Refactor wrapping of scipy optimizers. Add check for incompatible constraints in optimization. Improvements to plot_1d to correctly plot flux surface average quantities. Speed up calculation of Boozer transform. Have stability objectives print their max, min and average value at end of solve. Bug Fixes Fix issue where if fixing specific boundary modes, the indices used to index the target do not match up with the indices of the A matrix. Fix weighting of duplicate nodes for periodic domains. Ensure transforms build correctly even with empty grid. Ensure transforms always have 0,0,0 derivative. Change normalization for poloidal field to avoid having a 0 normalization factor.If you use this software, please cite it using the metadata from this file. To cite a specific version of DESC, please cite the correct version from Zenodo at https://zenodo.org/search?page=1&size=20&q=conceptrecid:%224876504%22&sort=-version&all_versions=Tru