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physics.plasm-ph2025
Symplectic integration of guiding-center equations in canonical coordinates for general toroidal fields
Christopher G. Albert, Georg S. Grassler, Sergei V. Kasilov +2
Symplectic integrators with long-term preservation of integrals of motion are introduced for the guiding-center model of plasma particles in toroidal magnetic fields of general top…
physics.plasm-ph2024
On the convergence of bootstrap current to the Shaing-Callen limit in stellarators
Christopher G. Albert, Craig D. Beidler, Gernot Kapper +2
Bootstrap current in stellarators can be presented as a sum of a collisionless value given by the Shaing-Callen asymptotic formula and an off-set current, which non-trivially depen…
physics.plasm-ph2020
Quasi-geometric integration of guiding-center orbits in piecewise linear toroidal fields
M. Eder, C. G. Albert, L. M. P. Bauer +2
A numerical integration method for guiding-center orbits of charged particles in toroidal fusion devices with three-dimensional field geometry is described. Here, high order interp…