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Christopher Berg Smiet

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Related publications (4)

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Direct prediction of saturated neoclassical tearing modes in slab using an equilibrium approach

Jonathan Graves, Joaquim Loizu Cisquella, Christopher Berg Smiet, Erol Balkovic

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, without needing to simulate the intermediate, resistivity-dependent dynamic ...

IOP Publishing2024

The Topology of Non-resonant Stellarator Divertors

Christopher Berg Smiet

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 the winding numbers of closed contours, which gives information on the number ...

IOP Publishing Ltd2025

Efficient single-stage optimization of islands in finite-β stellarator equilibria

Joaquim Loizu Cisquella, Christopher Berg Smiet, Erol Balkovic

We present single-stage optimization of islands in finite- β stellarator equilibria. Stellarator optimization is traditionally performed as a two-stage process; in the first stage, an optimal equilibrium is calculated that balances a set of competing const ...

American Institute of Physics (AIP)2025

Turnstile flux as a measure for chaotic transport in magnetic confinement fusion devices

Ludovic Rais, Joaquim Loizu Cisquella, Christopher Berg Smiet

We analyze a measure for the degree of chaos in the magnetic fields of magnetic confinement fusion reactors by calculating the lobe fluxes of turnstiles - a method developed for characterizing transport into and out of resonance zones in Hamiltonian dynami ...

2025