Implementation of energy transfer technique in ORB5 to study collisionless wave-particle interactions in phase-space

A new diagnostic has been developed to investigate the wave-particle interaction in phase-space gyrokinetic particle-in-cell codes. Keeping information about energy transfer terms velocity space, technique implemented and tested global code ORB5 it gives an opportunity localize domains of maximum wave–plasma exchange for separate species. Moreover, contribution different species resonances can be estimated as well, by integrating corresponding domains. This Mode-Plasma-Resonance (MPR) applied study dynamics Energetic-particle-induced Geodesic Acoustic Modes (EGAMs) ASDEX Upgrade shot, analysing influence on mode time evolution. Since equations, which is based, are valid both linear nonlinear cases, this approach plasma effects. As a possible future application, used, instance, EGAM frequency chirping, or heating due damping EGAMs.