34 citations · 63 across the 5 of their papers we have counts for
5 papers
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…
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…
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…
Symplectic integration with non-canonical quadrature for guiding-center orbits in magnetic confinement devices
Christopher G. Albert, Sergei V. Kasilov, Winfried Kernbichler
We study symplectic numerical integration of mechanical systems with a Hamiltonian specified in non-canonical coordinates and its application to guiding-center motion of charged pl…
Evaluation of toroidal torque by non-resonant magnetic perturbations in tokamaks for resonant transport regimes using a Hamiltonian approach
Christopher G. Albert, Martin F. Heyn, Gernot Kapper +3
Toroidal torque generated by neoclassical viscosity caused by external non-resonant, non-axisymmetric perturbations has a significant influence on toroidal plasma rotation in tokam…