6533b7dafe1ef96bd126e231
RESEARCH PRODUCT
Divertor of the European DEMO: Engineering and technologies for power exhaust
You J. H.Mazzone G.Visca E.Greuner H.Fursdon M.Addab Y.Bachmann C.Barrett T.Bonavolonta U.Boswirth B.Castrovinci F. M.Carelli C.Coccorese D.Coppola R.Crescenzi F.Di Gironimo G.Di Maio P. A.Di Mambro G.Domptail F.Dongiovanni D.Dose G.Flammini D.Forest L.Frosi P.Gallay F.Ghidersa B. E.Harrington C.Hunger K.Imbriani V.Li M.Lukenskas A.Maffucci A.Mantel N.Marzullo D.Minniti T.Muller A. V.Noce S.Porfiri M. T.Quartararo A.Richou M.Roccella S.Terentyev D.Tincani A.Vallone E.Ventre S.Villari R.Villone F.Vorpahl C.Zhang K.subject
Technology020209 energyMechanical EngineeringPower exhaust02 engineering and technologyDEMO; Fusion reactor; Divertor; Plasma-facing component; High-heat-flux; Power exhaust01 natural sciences7. Clean energy010305 fluids & plasmas[SPI]Engineering Sciences [physics]Fusion reactorDivertorDEMO; Divertor; Fusion reactor; High-heat-flux; Plasma-facing component; Power exhaustNuclear Energy and Engineering0103 physical sciences0202 electrical engineering electronic engineering information engineeringPlasma-facing componentGeneral Materials ScienceHigh-heat-fluxddc:600DEMOSettore ING-IND/19 - Impianti NucleariCivil and Structural Engineeringdescription
International audience; In a power plant scale fusion reactor, a huge amount of thermal power produced by the fusion reaction and external heating must be exhausted through the narrow area of the divertor targets. The targets must withstand the intense bombardment of the diverted particles where high heat fluxes are generated and erosion takes place on the surface. A considerable amount of volumetric nuclear heating power must also be exhausted. To cope with such an unprecedented power exhaust challenge, a highly efficient cooling capacity is required. Furthermore, the divertor must fulfill other critical functions such as nuclear shielding and channeling (and compression) of exhaust gas for pumping. Assuring the structural integrity of the neutron-irradiated (thus embrittled) components is a crucial prerequisite for a reliable operation over the lifetime. Safety, maintainability, availability, waste and costs are another points of consideration.In late 2020, the Pre-Conceptual Design activities to develop the divertor of the European demonstration fusion reactor were officially concluded. On this occasion, the baseline design and the key technology options were identified and verified by the project team (EUROfusion Work Package Divertor) based on seven years of R&D efforts and endorsed by Gate Review Panel.In this paper, an overview of the load specifications, brief descriptions of the design and the highlights of the technology R&D work are presented together with the further work still needed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-02-01 | Fusion Engineering and Design |