Abstract
A fast-fission blanket around a fusion plasma exploits high neutron multiplication for superior breeding and high-energy multiplication to generate significant net electrical power. A major improvement over previous fast-fission blanket concepts is the use of mobile fuel, namely a pebble-bed configuration with helium cooling. Upon loss of coolant, the mobile fuel can be gravity-dumped to a separately cooled dump tank before excessive temperatures are reached. The pebble bed is also compatible with rapid fuel exchange and a low-cost reprocessing method. With the ignited tokamak plasma producing 620 MW of fusion power, the net electric power is 1600 MWe and the annual fissile production exceeds 3 tonnes.
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Jassby, D.L., Berwald, D.H., Garner, J. et al. Fast-fission tokamak breeder reactors. J Fusion Energ 5, 171–180 (1986). https://doi.org/10.1007/BF01050611
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DOI: https://doi.org/10.1007/BF01050611