Work

yancc: Yet Another NeoClassical Code

Year: 2026

Type: software

Abstract: yancc is a pure-Python, JAX-based code for solving the drift kinetic equation to compute neoclassical flows and transport fluxes in toroidal magnetic confinement geometries, including both tokamaks and stellarators. It solves the full (multi-species, energy-dependent) drift kinetic equation as well as the monoenergetic approximation, using a matrix-free Krylov solver with a geometric multigrid preconditioner. Being written in JAX, it is differentiable and runs on both CPUs and GPUs.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.23059967

Authors: Conlin, Rory, Landreman, Matt

Institution: University of Maryland, College Park

Language: English

Topic: Magnetic confinement fusion research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7214946579

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