Current and next-generation fusion energy experiments use tungsten plasma-facing components (PFCs) to withstand the high heat loads on the plasma-wall interfaces. Determining the erosion and redeposition of this wall material is a critical issue for the success of fusion as an energy source. The potential for eroded tungsten atoms to transport into in the core plasma could quench the fusion reaction. The diagnosis of erosion and redeposition of tungsten PFCs needs accurate ionization and excitation atomic data, which can only be calculated with large-scale computational facilities. Loch’s team will use Summit to produce accurate tungsten erosion and redeposition diagnostics for fusion tokamak experiments such as the DIII-D tokamak in California. The project is also of relevance for world-wide efforts on fusion energy, such as the ITER experiment under construction in France.
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