Global electromagnetic gyrokinetic simulation in 3D equilibria
|Research Area||Plasma & Particle Physics|
|Principal Investigator(s)||Dr. Ralf Kleiber|
Modern stellarator experiments, as e.g. Wendelstein 7-X, need accompanying simulations of plasma microinstabilities and related turbulence. Especially important for the comparison of experiment and theory are full torus simulations for stellarator configurations. Gyrokinetics as a first principle based theory is well suited to describe the relevant physics. An established and flexible method for solving the gyrokinetic system of equations is the simulation via the particle-in-cell (PIC) Monte-Carlo method. For this purpose the EUTERPE code has been established which solves the (linear/nonlinear) gyrokinetic equation globally in arbitrary stellarator geometry including kinetic electrons, and electromagnetic perturbations. The full kinetic treatment of the electrons allows the investigation of trapped electron effects (e.g. TEM) and the inclusion of electromagnetic effects establishes the connection to magnetohydrodynamics (MHD). These developments will make EUTERPE the first code worldwide that is able to simulate global gyrokinetic electromagnetic instabilities in three dimensions. By using a third species the destabilisation of MHD modes (e.g. TAE, HAE) can also be studied.