4 citations · 16 across the 12 of their papers we have counts for
14 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…
The shear Alfvén continuum of quasisymmetric stellarators
Elizabeth J. Paul, Abdullah Hyder, Eduardo Rodríguez +2
The shear Alfvén wave (SAW) continuum plays a critical role in the stability of energetic particle-driven Alfvén eigenmodes. We develop a theoretical framework to analyze the SAW c…
The High-Order Magnetic Near-Axis Expansion: Ill-Posedness and Regularization
Maximilian Ruth, Rogerio Jorge, David Bindel
When analyzing stellarator configurations, it is common to perform an asymptotic expansion about the magnetic axis. This so-called near-axis expansion is convenient for the same re…
Near-axis description of stellarator-symmetric quasi-isodynamic stellarators to second order
Eduardo Rodriguez, Gabriel G. Plunk, Rogerio Jorge
The near-axis description of optimised stellarators, at second order in the expansion, provides important information about the field, both of physical and practical importance for…
Using Deep Learning to Design High Aspect Ratio Fusion Devices
P. Curvo, D. R. Ferreira, R. Jorge
The design of fusion devices is typically based on computationally expensive simulations. This can be alleviated using high aspect ratio models that employ a reduced number of free…
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…
Electron root optimisation for stellarator reactor designs
E. Lascas Neto, R. Jorge, C. D. Beidler +1
In this work, we propose a method of optimising stellarator devices to favour the presence of an electron root solution of the radial electric field. Such a solution can help avoid…
Tokamak to Stellarator Conversion using Permanent Magnets
M. Madeira, R. Jorge
With the advances in the optimization of magnetic field equilibria, stellarators have become a serious alternative to the tokamak, bringing this concept to the forefront of the pur…
Energetic Particle Tracing in Optimized Quasisymmetric Stellarator Equilibria
P. A. Figueiredo, R. Jorge, J. Ferreira +1
Recent developments in the design of magnetic confinement fusion devices have allowed the construction of exceptionally optimized stellarator configurations. The near-axis expansio…