4 papers
Runaway Electrons in Stellarators: Unlikely or Unavoidable?
Ida Ekmark, Matt Landreman
Generation of relativistic runaway electrons has historically not been considered a possible problem in stellarators, but this may not hold in reactor-scale stellarators despite th…
Bayesian optimization of stellarator alpha-particle confinement using data-informed parameter spaces and dimensionality reduction
Matt Landreman, Michael Czekanski, Andrew Giuliani +2
Modern stellarators are typically designed by optimizing the shape of the plasma boundary surface, with the parameters taken to be Fourier amplitudes. Many promising optimization a…
Machine-learning Closure for Vlasov-Poisson Dynamics in Fourier-Hermite Space
Nathaniel Barbour, William Dorland, Ian G. Abel +1
Accurate reduced models of turbulence are desirable to facilitate the optimization of magnetic-confinement fusion reactor designs. As a first step toward higher-dimensional turbule…
Optimization of passive superconductors for shaping stellarator magnetic fields
Alan A. Kaptanoglu, Matt Landreman, Michael C. Zarnstorff
We consider the novel problem of optimizing a large set of passive superconducting coils (PSCs) with currents induced by a background magnetic field rather than power supplies. In…