UWFDM-1107 Neutronics Features of a High Power Density First Wall/Blanket with Lithium Evaporation Cooling
نویسندگان
چکیده
Two-dimensional neutronics analysis has been performed for the EVOLVE (EVaporation Of Lithium and Vapor Extraction) FW/blanket concept. The concept utilizes a refractory alloy (W-5Re) structure. The overall tritium breeding ratio is 1.37 at a lithium enrichment of 40% Li. The amount of nuclear heat deposited in the different regions was determined. About 76% of the total thermal energy is carried by the Li vapor to the heat exchanger. Since this heat is extracted at a temperature of 1200°C, a power conversion efficiency >60% can be achieved. No significant poloidal peaking is observed in the nuclear heating and damage profiles. Shielding requirements for the vacuum vessel and magnet are satisfied.
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