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Home   /   Thesis   /   Edge plasma turbulence study in compact fusion power plants at high magnetic field

Edge plasma turbulence study in compact fusion power plants at high magnetic field

Corpuscular physics and outer space Numerical simulation Plasma physics and laser-matter interactions Technological challenges


Heat fluxes in magnetic fusion devices pose a significant challenge for plasma-facing components. The power from the plasma is concentrated on a small surface area of the vessel wall, potentially reaching fluxes of 100 MW/m² in ITER, which exceeds current engineering heat handling capabilities. Mitigating these heat fluxes involves transferring power to non-confined particles such as photons or neutral atoms before reaching the materials. This is achieved by utilizing plasma-neutral interactions and seeding radiative impurities in the plasma edge, increasing the surface area for heat deposition and reducing heat flux per unit area. Numerical simulations play a crucial role in studying these dissipative regimes, though current models often use simplified descriptions of plasma transport. The proposed PhD project aims to analyze the scaling law for the heat flux channel width using high-fidelity 3D turbulence simulations with the SOLEDGE3X code. The project involves two main tasks: scanning key plasma parameters to understand the dependencies of the heat flux channel width and developing a linear version of SOLEDGE3X to explore instabilities driving turbulent transport. This research is essential for designing high-field compact magnetic fusion devices and addressing the uncertainties in current scaling laws.


Institut de recherche sur la fusion par confinement magnétique
Service de Physique des Plasmas de Fusion
Groupe Mesures Physiques Plasma
Aix-Marseille Université
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