New toroidally spectral field solver added to XGC enables accurate modeling of low-n MHD modes like kink and tearing by relaxing large aspect ratio assumption while controlling complexity via toroidal spectral discretization.
vibe coding
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Turbulence spreading transports zonal flows into stable regions in gyrokinetic simulations, directly related to enstrophy transport via a momentum theorem extending the Charney-Drazin result.
A new JAX-based gyrokinetic code achieves statistical parity with the legacy GKW solver, delivers substantial speedup on GPUs, and enables ML workflows via automatic differentiation.