The Development of the EM RF-Edge Interactions Mini-App Stix Using MFEM

Explore the development of the EM RF-Edge Interactions Mini-app "Stix" using MFEM in this 21-minute conference talk from the MFEM Workshop 2022. Dive into the importance of ion cyclotron radio frequency (ICRF) power in fusion devices and the challenges posed by radio frequency (RF) sheath formation. Learn about the implementation of a model for RF sheath based on a finite impedance sheath boundary condition, formulated by J. Myra and D. A. D'Ippolito. Discover the progress in developing Stix, a parallelized cold-plasma wave equation solver that implements non-linear sheath impedance boundary conditions using the MFEM library. Gain insights into RF sheath rectification, experimental results, and simulation techniques in pseudo-1D and pseudo-2D scenarios.