A method is demonstrated to rapidly calculate the shapes and properties of quasi-
axisymmetric and quasi-helically symmetric stellarators. In this approach, optimization is …

Three-dimensional equilibrium codes are vital for stellarator design and operation, and high-
accuracy equilibria are also necessary for stability studies. This paper details comparisons …

The DESC stellarator optimization code takes advantage of advanced numerical methods to
search the full parameter space much faster than conventional tools. Only a single …

We present new stellarator equilibria that have been optimized for reduced turbulent
transport using nonlinear gyrokinetic simulations within the optimization loop. The …

We apply a continuation method to recently optimized stellarator equilibria with excellent
quasi-axisymmetry to generate new equilibria with a wide range of rotational transform …

The planar coil stellarator design is a novel approach to producing the confining magnetic
field of a stellarator plasma. The work presented here details the optimization of the two …

Plasma supports collective modes and particle–wave interactions that lead to complex
behaviour in, for example, inertial fusion energy applications. While plasma can sometimes …

We demonstrate a fast adjoint-based method to optimise tokamak and stellarator equilibria
against a pressure-driven instability known as the infinite-(the ratio of thermal to magnetic …

Abstract The Columbia Stellarator eXperiment (CSX), currently being designed at Columbia
University, aims to test theoretical predictions related to QA plasma behavior, and to pioneer …

Optimising stellarators for quasisymmetry leads to strongly reduced collisional transport and
energetic particle losses compared with unoptimised configurations. Although stellarators …