# Figures of merit for stellarators near the magnetic axis

@article{Landreman2020FiguresOM, title={Figures of merit for stellarators near the magnetic axis}, author={Matt Landreman}, journal={Journal of Plasma Physics}, year={2020}, volume={87} }

A new paradigm for rapid stellarator configuration design has been recently demonstrated, in which the shapes of quasisymmetric or omnigenous flux surfaces are computed directly using an expansion in small distance from the magnetic axis. To further develop this approach, here we derive several other quantities of interest that can be rapidly computed from this near-axis expansion. First, the $\boldsymbol {\nabla }\boldsymbol {B}$ and $\boldsymbol {\nabla }\boldsymbol {\nabla }\boldsymbol {B…

## 4 Citations

### Single-stage gradient-based stellarator coil design: Optimization for near-axis quasi-symmetry

- PhysicsJ. Comput. Phys.
- 2022

### Gradient-based optimization of 3D MHD equilibria

- PhysicsJournal of Plasma Physics
- 2021

Using recently developed adjoint methods for computing the shape derivatives of functions that depend on magnetohydrodynamic (MHD) equilibria (Antonsen et al., J. Plasma Phys., vol. 85, issue 2,…

### Mapping the space of quasisymmetric stellarators using optimized near-axis expansion

- Physics
- 2022

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

### A single-field-period quasi-isodynamic stellarator

- PhysicsJournal of Plasma Physics
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A single-field-period quasi-isodynamic stellarator configuration is presented. This configuration, which resembles a twisted strip, is obtained by the method of direct construction, that is, it is…

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