9 papers
Compact quasiaxisymmetric stellarators, a near axisymmetric theory
Wrick Sengupta, Rogerio Jorge, Nikita Nikulsin +4
We develop a theory of ridges in compact stellarators with quasiaxisymmetry (QA). The equilibrium with finite plasma currents and pressure is modeled by ideal magnetohydrostatics (…
Optical analogy for stellarators: Ridges as caustics and coils as singularities
Wrick Sengupta, Stefan Buller, Rogerio Jorge +7
A common feature of most numerically optimized stellarator geometries is the presence of sharp ridges on outer flux surfaces, irrespective of the rotational transform. Despite thei…
Designing A Buildable Optimized Stellarator to Confine Electron-Positron Plasmas
Pedro F. Gil, Jason Smoniewski, Paul Huslage +7
In this paper, the design of the the plasma equilibrium and superconducting coils for the Electrons and Positrons in an Optimized Stellarator EPOS experiment is presented. With new…
Stochastic single-stage stellarator optimization using fixed-boundary equilibria
Pedro F. Gil, Jason Smoniewski, Rogerio Jorge +2
In this paper, single-stage stellarator optimization is combined with stochastic coil optimization to improve the robustness of the stellarator as compared to deterministic methods…
JAX-in-Cell: A Differentiable Particle-in-Cell Code for Plasma Physics Applications
Longyu Ma, Rogerio Jorge, Hongke Lu +2
JAX-in-Cell is a fully electromagnetic, multispecies, and relativistic 1D3V Particle-in-Cell (PIC) framework implemented entirely in JAX. It provides a modern, Python-based alterna…
Data-Driven Approach to Model the Influence of Magnetic Geometry in the Confinement of Fusion Devices
R. Laia, R. Jorge, G. Abreu
The design of fusion energy devices involves a balance between competing performance metrics to achieve an energy gain. In stellarators, the geometry is very flexible and involves…