Implementation and Verification of LC Circuit for Z-pinch FLASH Simulations

High-fidelity simulations of pulsed-power–driven high-energy-density physics experiments frequently necessitate the modeling of the electrical interplay of current between the vacuum-insulator stack and the load (i.e., the plasma generated across the anode–cathode gap). Recent additions to the FLASH code, the high-performance computing, radiation magnetohydrodynamics code developed by the Flash Center for Computational Science, have enabled it to model Z-pinch experiments. Here we discuss the implementation in FLASH of the circuit model presented by McBride et al., who proposed a simple LC model to be used as a drive circuit in refurbished Z accelerator simulations. We outline the numerical implementation and show results from select verification benchmarks.