31 citations · 217 across the 21 of their papers we have counts for
21 papers
A new quasilinear model for turbulent momentum transport in tokamaks with flow shear and plasma shaping
Haomin Sun, Justin Ball, Stephan Brunner +1
In tokamak experiments, sufficiently strong flow shear reduces turbulent transport, thereby improving the prospects for fusion power plants. It is therefore of great im…
Ultra Long Turbulent Eddies, Magnetic Topology, and the Triggering of Internal Transport Barriers in Tokamaks
A. Volčokas, J. Ball, S. Brunner
Local nonlinear gyrokinetic simulations of tokamak plasmas demonstrate that turbulent eddies can extend along magnetic field lines for hundreds of poloidal turns when the magnetic…
Local gyrokinetic simulations of tokamaks with non-uniform magnetic shear
Justin Ball, Stephan Brunner
In this work, we modify the standard flux tube simulation domain to include arbitrary ion gyroradius-scale variation in the radial profile of the safety factor. To determine how to…
Three-Dimensional Inhomogeneity of Electron-Temperature-Gradient Turbulence in the Edge of Tokamak Plasmas
J. F. Parisi, F. I. Parra, C. M. Roach +15
Nonlinear multiscale gyrokinetic simulations of a Joint European Torus edge pedestal are used to show that electron-temperature-gradient (ETG) turbulence has a rich three-dimension…
Effect of collisions on non-adiabatic electron dynamics in ITG-driven microturbulence
Ajay C. J., Stephan Brunner, Justin Ball
Non-adiabatic electron response leads to significant changes in Ion Temperature Gradient (ITG) eigenmodes, leading in particular to fine-structures that are significantly extended…
Development of Advanced Linearized Gyrokinetic Collision Operators Using a Moment Approach
B. J. Frei, J. Ball, A. C. D. Hoffmann +3
The derivation and numerical implementation of a linearized version of the gyrokinetic (GK) Coulomb collision operator (Jorge R. et al., J. Plasma Phys. 85, 905850604 (2019)) and o…