April 7-9

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Author: Samuel J Frank
Requested Type: Consider for Invited
Submitted: 2025-02-21 10:47:48

Co-authors: B. Biswas, J. Viola, A. Tran, Yu. V. Petrov, R. W. Harvey, J. Caneses, J. C. Wright, C. B. Forest

Contact Info:
Realta Fusion
1200 John Q Hammons Dr
Madison, WI   53717
USA

Abstract Text:
Realta Fusion is a private fusion company spun out of the Wisconsin HTS Axisymmetric Mirror (WHAM) experiment working to develop axisymmetric magnetic mirror fusion devices for industrial heat and power. Presently, Realta is developing a first-of-a-kind “RealTwin” integrated model for magnetic mirrors. This integrated simulation model is being used for the design and interpretation of WHAM experiments as well as the design of next-generation magnetic mirrors which will be constructed by Realta Fusion. The RealTwin includes codes developed by Realta and its collaborators simulating radiofrequency (RF) heating (GENRAY-c & AORSA), neutral beam injection (NBI) heating (FIDASIM), neutral (KN1D-c) & plasma (CQL3D-m) transport, anisotropic magnetohydrodynamic (MHD) equilibrium (Pleiades & Tokamaker), and MHD & kinetic stability (FLORA, Gkeyll, hybrid-VPIC). These simulation codes are coupled together self-consistently using a modified version of the Integrated Plasma Simulator developed by the Oak Ridge National Lab, and simulation results can be exported to engineering teams to evaluate fusion device properties such as neutronics, component interferences, and heat loading.
An overview of the RealTwin model will be provided and a selection of results from simulations of both WHAM and next-generation magnetic mirrors will be presented. These examples will include: the simulation of kinetic instabilities in WHAM using coupled Fokker-Planck transport, MHD equilibrium, and 3D hybrid particle-in-cell codes, simulations of the impact of neutral particles in WHAM experiments and next-generation mirrors using coupled Fokker-Planck and neutral transport calculations, and Fokker-Planck transport and MHD equilibrium in tandem magnetic mirror end plugs.

Characterization: 5.0

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