5 papers · 1 filter
Asymptotic scaling theory of electrostatic turbulent transport in magnetised fusion plasmas
T. Adkins, I. G. Abel, M. Barnes +8
Turbulent transport remains one of the principal obstacles to achieving efficient magnetic confinement in fusion devices. Two of the dominant drivers of the turbulence are microsca…
A family of quasi-axisymmetric stellarators with varied rotational transform
Stefan Buller, Matt Landreman, John Kappel +1
We apply a continuation method to recently optimized stellarator equilibria with excellent quasi-axisymmetry (QA) to generate new equilibria with a wide range of rotational transfo…
Coil Optimization for Quasi-helically Symmetric Stellarator Configurations
Alexander Vyacheslav Wiedman, Stefan Buller, Matt Landreman
Filament-based coil optimizations are performed for several quasihelical stellarator configurations, notably the one from [M. Landreman, E. Paul, PRL 128, 035001, 2022], demonstrat…
Optimization of Nonlinear Turbulence in Stellarators
Patrick Kim, Stefan Buller, Rory Conlin +8
We present new stellarator equilibria that have been optimized for reduced turbulent transport using nonlinear gyrokinetic simulations within the optimization loop. The optimizatio…
The importance of the classical channel in the impurity transport of optimized stellarators
S. Buller, A. Mollén, S. L. Newton +2
In toroidal magnetic confinement devices, such as tokamaks and stellarators, neoclassical transport is usually an order of magnitude larger than its classical counterpart. However,…