5 papers
Statistical equilibrium model for stellarators
Maximilian Ruth, Joshua W. Burby, Wrick Sengupta +1
In three dimensional toroidal domains without symmetry, the standard magnetohydrodynamic (MHD) equilibrium model used for magnetic confinement fusion does not generally support smo…
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…
Non-perturbative guiding center model for magnetized plasmas
J. W. Burby, I. A. Maldonado, M. Ruth +1
Perturbative guiding center theory adequately describes the slow drift motion of charged particles in the strongly-magnetized regime characteristic of thermal particle populations…
Finding Birkhoff Averages via Adaptive Filtering
Maximilian Ruth, David Bindel
In many applications, one is interested in classifying trajectories of Hamiltonian systems as invariant tori, islands, or chaos. The convergence rate of ergodic Birkhoff averages c…
Level Set Learning for Poincaré Plots of Symplectic Maps
Maximilian Ruth, David Bindel
Many important qualities of plasma confinement devices can be determined via the Poincaré plot of a symplectic return map. These qualities include the locations of periodic orbits,…