Numerical simulation of a 30 GHz gyrotron resonator with a 3D high-order discontinuous galerkin approach based particle-in-cell method

Summary form only given. Fast design codes for the simulation of the particle-field interaction in the interior of highly nonlinear gyrotron resonators are state of the art tools for gyrotron design. While procuring their rapidity by making strong physical simplifications and approximations, the correctness of these assumptions is not known to be valid for all considered variations of the geometry and operation setup. Solving the self-consistent nonlinear Vlasov-Maxwell system without significant physical reductions, the transient 3D electromagnetic Particle-In-Cell (PIC) method can provide better insights into these setups and beyond that can serve as validation tool for fast design codes.