DETAILED CONCEPTUAL DESIGN OF THE FUSION EXPERIMENTAL BREEDER

A detailed conceptual design for a Fusion Experimental Breeder (FEB) w as constructed. It was He-cooled with liquid lithium/Li2O as a tritium breeder and the machine parameters were as follows. a major radius of 4 m, a minor radius of I m, magnetic field on axis 5 T, a plasma curr ent 5.7 MA, and a neutron wall loading of 0.42 MW m(-2) Various aspect s of the core plasma were studied comprehensively. CAD software was us ed to create a complete set of drawings, including 3D-perspective ones . Emphasis was given to the design of the nuclear components. Two vers ions of the blanket were designed and attention was paid to the design of the blanket structure. Detailed analyses were performed, i.e. 3D n eutronics analyses with the latest ENDL, 3D thermo-mechanic analyses, probability risk assessment of the main cooling system failure, 3D shi eld analyses, etc. A gas box divertor is at present being studied. Rad ioactivity related parameters were calculated, including the nuclear w aste disposal rating of the first wall and inventories of U-232 and (N P)-N-237, etc. The cost of FEB was estimated with the calculation of t he ITER capital cost as a reference. Based on this design, an engineer ing outline was started in 1996. (C) 1998 Elsevier Science S.A. All ri ghts reserved.