Resolution Studies for Gyrokinetic Simulations of the Wisconsin High-Field Axisymmetric Mirror

Abstract:

The magnetic mirror is a fusion-relevant plasma confinement device that has experienced a resurgence of interest recently from private industry. Before expensive experiments are conducted, designers need accurate and efficient modeling tools. Under the framework of gyrokinetics, Gkeyll proposes to answer questions related to equilibrium and turbulence. Using fewer cells in these simulations means they can be completed more cost-effectively. This project investigates the application of non-uniform grids to accelerate studies of magnetic mirrors, scanning resolution space, and proposing new functional forms. Results show that we can accelerate the simulation by 5 times with optimal grids. These grids will be utilized in larger simulations, enabling designers to build the fusion devices of the future.