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Thin blanket design for MINIMARS - a compact tandem mirror fusion reactor

Conference · · Trans. Am. Nucl. Soc.; (United States)
OSTI ID:5503798
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A primary goal in the MINIMARS fusion power reactor design is to achieve the lowest possible cost of electricity and highest mass utilization while maintaining credibility and passive safety. Because the blanket impacts many components, reducing its thickness-while achieving adequate breeding and a high energy multiplication-was of prime importance. The MINIMARS blanket is a helium-gas-cooled design using 17Li-83Pb (LiPb) breeder, HT-9 structure, and beryllium moderator/multiplier. The helium gas is contained in small tubes that are immersed in a close-packed matrix of beryllium balls and LiPb. The result is a compact blanket only 18 cm thick in which only the tubes are operated in a stressed condition, but the blanket structure is designed to withstand a helium gas leak in one of the tubes. By circulating the helium gas from the blanket into the reflector, the reflector energy is recovered at a high temperature giving a gross power cycle efficiency of 42.7% while maintaining a low interface temperature between the breeding material and structure.
Research Organization:
Univ. of Wisconsin, Madison
OSTI ID:
5503798
Report Number(s):
CONF-860610-
Conference Information:
Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 52
Country of Publication:
United States
Language:
English

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Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700201* -- Fusion Power Plant Technology-- Blanket Engineering
ACCIDENTS
ALKALINE EARTH METALS
ALLOYS
BERYLLIUM
BREEDING BLANKETS
BREEDING PELLETS
BREEDING RATIO
CONVERSION RATIO
COOLANTS
COOLING
DESIGN
EFFICIENCY
ELEMENTS
FLUIDS
GASES
HELIUM
LEAD ALLOYS
LITHIUM ALLOYS
LOSS OF COOLANT
LOSS OF FLOW
MAGNETIC MIRROR TYPE REACTORS
METALS
MINIMARS REACTOR
NONMETALS
RARE GASES
REACTOR ACCIDENTS
REACTOR COMPONENTS
THERMONUCLEAR REACTORS