Overview of the FullWave code – a full-wave code based on hybrid-iterative algorithm in configuration space*

FAR-TECH has been developing the FullWave code for many years. A full-wave code simulates wave propagation, without paraxial approximation which is used in ray tracing, including plasma cutoffs, mode conversion layers, diffraction, interference, and wave focusing. We present comprehensive status report, including comparison with other full-wave codes.

 

Our FullWave code solves wave equations, discretized in configuration space, in 2D Tokamak geometry both in cold and in fully nonlocal (all orders in Larmor radius) hot plasma models. The nonlocal hot plasma dielectric response is calculated by numerically solving the linearized Vlasov equation by the integration along characteristics method [1].

 

FullWave is based on a novel hybrid iterative algorithm [Svidzinski et al., Phys. Plasmas 25, 082509 (2018)] to overcome memory limitations in direct solvers. The hybrid approach iterates time evolution, in time domain, and iterative relaxation, in frequency domain.  

 

FullWave can now simulate hot plasma wave dynamics in the electron cyclotron resonance (ECR) frequency ranges for realistic Tokamak plasma parameters [Svidzinski et al., Phys. Plasmas 31, 042504 (2024)]

 

Our ongoing effort on the helicon and Lower Hybrid (LH) waves is presented at this meeting by L. Zhao et al.