37 citations · 77 across the 5 of their papers we have counts for
5 papers
A phase-shift-periodic parallel boundary condition for low-magnetic-shear scenarios
D. A. St-Onge, M. Barnes, F. I. Parra
We formulate a generalized periodic boundary condition as a limit of the standard twist-and-shift parallel boundary condition that is suitable for simulations of plasmas with low m…
Turbulent momentum transport due to the beating between different tokamak flux surface shaping effects
Justin Ball, Felix I. Parra
Introducing up-down asymmetry into the tokamak magnetic equilibria appears to be a feasible method to drive fast intrinsic toroidal rotation in future large devices. In this paper…
Moderation of neoclassical impurity accumulation in high temperature plasmas of helical devices
J. L. Velasco, I. Calvo, S. Satake +16
Achieving impurity and helium ash control is a crucial issue in the path towards fusion-grade magnetic confinement devices, and this is particularly the case of helical reactors, w…
Less constrained omnigeneous stellarators
Felix I. Parra, Ivan Calvo, Per Helander +1
A stellarator is said to be omnigeneous if all particles have vanishing average radial drifts. In omnigeneous stellarators, particles are perfectly confined in the absence of turbu…
When omnigeneity fails
Felix I. Parra, Ivan Calvo, Jose Luis Velasco +1
A generic non-symmetric magnetic field does not confine magnetized charged particles for long times due to secular magnetic drifts. Stellarator magnetic fields should be omnigeneou…