39 citations · 66 across the 12 of their papers we have counts for
13 papers
SPECTRE: A robust solver for 3D equilibria with arbitrary topology
E. Balkovic, J. Loizu, E. Lanti +6
We present SPECTRE, a new equilibrium code based on the Multi-Region relaxed MHD model for robustly calculating 3D equilibria with general magnetic topology, allowing for flux surf…
Polaris: a flexible stellarator demonstration experiment with simple modular coils
Simon P. H. Vincent, Joaquim Loizu, Matthieu Toussaint +14
We present the design, construction, and first plasma experiments of Polaris, a new small-scale stellarator experiment (major radius R ~ 0.4 m) located at the Swiss Plasma Center.…
Characterisation of X- and O-points in Wendelstein 7-X with respect to coil currents
Robert Davies, Christopher B. Smiet, Charlotte Batzdorf +3
This work analyses vacuum magnetic field topology in Wendelstein 7-X (W7-X) with respect to changes in the current in the superconducting coils. We develop a fast automated scheme…
Surfaces with Klein bottle topology occur in fusion reactor fields
Christopher Berg Smiet
Magnetic confinement fusion devices, such as tokamaks and stellarators, are designed such that magnetic field lines lie in magnetic surfaces that form a foliation of nested genus-1…
Turnstile area as a measure for chaotic transport in magnetic confinement fusion devices
Christopher Berg Smiet, Ludovic Rais, Joaquim Loizu +1
We analyze stochasticity in the magnetic fields of magnetic confinement fusion reactors by calculating the lobe areas of turnstiles - a method developed for characterizing transpor…
The topology of non-resonant stellarator divertors
Robert Davies, Christopher B. Smiet, Alkesh Punjabi +2
We apply topological methods to better understand how the magnetic field in the stellarator edge can be diverted away from the confined region. Our primary method is calculating th…
Direct prediction of saturated neoclassical tearing modes in slab using an equilibrium approach
Erol Balkovic, Joaquim Loizu, Jonathan P. Graves +2
We demonstrate for the first time that the nonlinear saturation of neoclassical tearing modes (NTMs) can be found directly using a variational principle based on Taylor relaxation,…
Efficient single-stage optimization of islands in finite- stellarator equilibria
Christopher Berg Smiet, Joaquim Loizu, Erol Balkovic +1
We present the first single-stage optimization of islands in finite- stellarator equilibria. Stellarator optimization is traditionally performed as a two-stage process; in the f…
A topological approach to magnetic nulls
Ben Y. Israeli, Christopher Berg Smiet
Magnetic nulls are locations where the magnetic field vanishes. Nulls are the location of magnetic reconnection, and they determine to a large degree the magnetic connectivity in a…
EUV Debris Mitigation using Magnetic Nulls
Ben Y. Israeli, Christopher Berg Smiet, Marien Simeni Simeni +1
Next generation EUV sources for photolithography use light produced by laser-produced plasmas (LPP) from ablated tin droplets. A major challenge for extending the lifetime of these…
Resistive evolution of toroidal field configurations and their relation to magnetic clouds
Christopher B. Smiet, Hugo J. de Blank, Tobias A. de Jong +2
We study the resistive evolution of a localized self-organizing magnetohydrodynamic equilibrium. In this configuration the magnetic forces are balanced by a pressure force caused b…
Ideal Relaxation of the Hopf Fibration
Christopher Berg Smiet, Simon Candelaresi, Dirk Bouwmeester
Ideal MHD relaxation is the topology-conserving reconfiguration of a magnetic field into a lower energy state where the net force is zero. This is achieved by modeling the plasma a…
Self-organizing Knotted Magnetic Structures in Plasma
C. B. Smiet, S. Candelaresi, A. Thompson +3
We perform full-MHD simulations on various initially helical configurations and show that they reconfigure into a state where the magnetic field lines span nested toroidal surfaces…