6 papers · 1 filter
Including the vacuum energy in stellarator coil design
S. Guinchard, S. R. Hudson, E. J. Paul
Being three-dimensional, stellarators have the advantage that plasma currents are not essential for creating rotational-transform; however, the external current-carrying coils in s…
Periodic Korteweg-de Vries soliton potentials generate quasisymmetric magnetic field strength in a finite plasma-beta equilibrium
W. Sengupta, R. Madan, S. Buller +6
Quasisymmetry (QS) is a hidden symmetry of the magnetic field strength, B, that enables effective confinement of charged particles in a fully three-dimensional (3D) toroidal plasma…
Flexible Stellarator Physics Facility
F. I. Parra, S. -G. Baek, M. Churchill +21
We propose to build a Flexible Stellarator Physics Facility to explore promising regions of the vast parameter space of disruption-free stellarator solutions for Fusion Pilot Plant…
Exploration of the parameter space of quasisymmetric stellarator vacuum fields through adjoint optimisation
Richard Nies, Elizabeth J. Paul, Dario Panici +2
Optimising stellarators for quasisymmetry leads to strongly reduced collisional transport and energetic particle losses compared to unoptimised configurations. Though stellarators…
Constructing nested coordinates inside strongly shaped toroids using an action principle
Zeno Tecchiolli, Stuart Hudson, Joaquim Loizu +3
A new approach for constructing polar-like boundary-conforming coordinates inside a toroid with strongly shaped cross-sections is presented. A coordinate mapping is obtained throug…
Application of Lagrangian techniques for calculating the on-axis rotational transform
S. Guinchard, W. Sengupta, S. R. Hudson
The Floquet exponents of periodic field lines are studied through the variations of the magnetic action on the magnetic axis, which is assumed to be elliptical. The near-axis forma…