An advanced He-cooled divertor concept: Design, cooling technology, and thermohydraulic analyses with CFD

At the Forschungszentrum Karlsruhe (FZK), designs of He-cooled divertor concepts are pursued for near-term reactor models like DEMO. Due to the new concept presented here, small structured tungsten parts are no longer needed for the design. In combination with new assembly and sub-module designs this results in promising characteristics regarding cooling performance, reliability and feasibility. The cooling method and conceptual design of the He-jet-cooled divertor shall be presented in this study, together with an assessment of the performance based on computational fluid dynamics (CFD) simulations.