Francesco Onorati
Investigation of the Impact of Magnetic Island Geometric Parameters on Divertor Performance in Stellarators.
Rel. Fabio Subba, Felix Reimold, Nassim Maaziz. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Energetica E Nucleare, 2026
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Abstract
Nuclear fusion power represents a possible secure and carbon-free energy source, offering a sustainable solution to future global energy demands. As of today, magnetic confinement fusion (MCF) is the most promising and investigated approach to employ thermonuclear fusion for large-scale energy production. Within this context, three-dimensional, non-axisymmetric magnetic devices called stellarators represent a promising pathway for steady-state reactor operation. In these devices, managing the high particle and energy fluxes that exit the confined plasma and enter the boundary region, the so-called Scrape-Off Layer (SOL), remains a critical challenge to ensure the integrity of plasma-facing components. The island divertor is a leading power exhaust concept for stellarators, utilizing intrinsic magnetic islands to safely channel power and particles in the SOL to a localized surface, the divertor target plates.
Operating the divertor in a detached regime is highly desired, as it leads to power starvation at the targets and mitigates the overload on plasma-facing components
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