Fully electromagnetic nonlinear gyrokinetic equations for tokamak edge turbulence

Fully electromagnetic nonlinear gyrokinetic equations for tokamak edge turbulence

Nonlinear electromagnetic gyrokinetic simulations of tokamak plasmas

One of the central physics issues currently targeted by nonlinear gyrokinetic simulations is the role of finite-β effects. The latter change the MHD equilibrium, introduce new dynamical space and time scales, alter and enlarge the zoo of electrostatic microinstabilities and saturation mechanisms, and lead to turbulent transport along fluctuating magnetic field lines. It is shown that the electr...

Gyrokinetic Simulation of Tokamak Edge Plasmas

It has been recently discovered that the trapped electron mode (TEM) may play an important role in the H mode edge plasma for domestic tokamaks such as EAST and HL-2A. The stability and transport for TEM for the edge parameters are studied using large scale gyrokinetic particle simulations. The gyrokinetic simulation reveals the parametric dependences on the wavelength and collisionality. The b...

Full f Gyrokinetic Simulation of Tokamak Plasma Turbulence Using ELMFIRE

Gyrokinetic particle-in-cell simulation on a transport and microinstability time scale is performed with the ELMFIRE code for a small tokamak FT-2 with kinetic electrons. Turbulent modes are characterized based on their poloidal phase velocity, and tentative comparison with the Doppler reflectometric measurement is done for the poloidal mode rotation. Cyclone base case comparison with adiabatic...

Gyrokinetic Simulations of Tokamak Micro-Turbulence Including Kinetic Electron Effects

A gyrokinetic toroidal particle code for a 3-dimensional nonlinear turbulence simulation (GT3D) has been developed to study the ion temperature gradient driven – trapped electron mode (ITG-TEM) turbulence in tokamak plasmas. From linear zonal flow damping tests and nonlinear ITG simulations, it is shown that a new method based on a canonical Maxwellian distribution is essential to simulate corr...