Enhancing Boundary Plasma Simulations: Key Advances from the ABOUND SciDAC Project
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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract
Our project aims to develop new multi-scale and multi-physics simulation capabilities toachieve a fundamental understanding of boundary plasma dynamics. By utilizing advancedcomputation, theory, modeling, and phenomenology, our objective is to optimize tokamakplasma exhaust management while maintaining high confinement (H-mode) throughexperimental validation and rigorous code-code benchmarking.The four principal foci of the project are:(1)Pedestal turbulence,(2)Pedestal scrape-off layer (SOL) coupling and SOL width broadening,(3)Edge relaxation dynamics,(4)Divertor heat load control via detachment.Specifically, we will investigate the full cycle of bursting edge-localized modes (ELMs) toidentify the physical mechanisms underlying both large and small ELMs.