StellFoundry: Creating a framework for advanced stellarator design optimization and validation

Design of stellarator reactors will require integrating many physics and engineering tools to aid in optimizing and validating the design. The SciDAC-5 project StellFoundry seeks to integrate simulations from a hierarchy of fidelities into the design process, creating workflows for creating faithful digital models that can be leveraged to accelerate the design process. Here we present current status of work within the StellFoundry project. The simulators currently cover a range of physics, including ideal to extended MHD, core/edge turbulent and neoclassical transport, energetic particle transport, RF and neutral beams, neutronics, erosion, and beyond. AI surrogates for turbulence have been created, and applied to transport simulations. Advanced optimization techniques are also being developed to better include simulation results from a range of fidelity simulators in optimization loops. Tools and schema for coupling these codes in HPC environments for multi-physics simulation capability are being developed.