Abstract Details
Abstracts
Author: George Wilkie
Requested Type: Poster
Submitted: 2025-03-13 17:19:37
Co-authors: P. Romano, R. M. Churchill
Contact Info:
Princeton Plasma Physics Laboratory
100 Stellarator Rd
Princeton, NJ 08540
United States
Abstract Text:
The transport of recycling atoms in magnetic confinement plays a key role in plasma-wall interaction, fueling, and diagnostics. Performant and user-friendly tools are demanded to predict their behavior. This is becoming increasingly important as neutrals are relied upon to protect the wall from intense heat fluxes, and neutral diagnostics are relied upon for plasma control. These effects are most important in the edge, where the spatial profile of plasma properties is strongly varying, including both the high-confinement pedestal and the scrape-off layer. Recently, the OpenMC framework has been adapted for atomic physics [1]. OpenMC has been benchmarked against DEGAS2 with respect to accuracy and performance with the inclusion of ionization and charge exchange reactions. The relative error between the models is small, and the performance of OpenMC is at least comparable to DEGAS2. This is the case even without taking advantage of heterogeneous computing architectures, which is only one of several remarkable new capabilities that this demonstration heralds.
[1] Wilkie, Romano, Chuchill. "Demonstration of OpenMC as a framework for atomic transport and plasma interaction." Under review in Plasma Physics and Controlled Fusion. arxiv.org/abs/2411.12
Characterization: 4.0
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