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Speaker: John Wright, Plasma Science & Fusion Center, MIT
Title: The role of Applied Mathematics in the RF SciDAC Program
Abstract: The RF-SciDAC program has the mission to improve understanding and modeling of heating and driven currents from antenna actuators. The SciDAC programs partner domain scientists from DoE with applied mathematicians from ASCR. Collaborating with researchers from the ASCR community, we have achieved significant advances in the development of a hierarchy of predictive models for the interaction of ion cyclotron range of frequency (ICRF) power with the walls of fusion devices and we have extended our models for wave propagation and absorption to both mirror and stellarator devices. Other current efforts include developing a multi-physics model that combines a fluid transport solver and an electromagnetic field solver in order to investigate how wave power interacts with and modifies the far edge plasma. These physics models are being implemented in computational frameworks in both high-fidelity form and as machine learning based surrogates, in anticipation of their use in a Whole Facility Model.