Low Activation Fusion Design Studies. Annual Report for FY 1983

摘要

Low activation in fusion is achieved by substitution of low activation materials, typically aluminum alloys, graphite, and SiC, for the more conventional stainless steel materials used in construction of a fusion power reactor. The nuclear design of a very low activation fusion system was completed. A tritium breeding ratio of 1.15 tritons per D-T neutron was achieved. A scoping study to assess the feasibility of a SiC/Li sub 17 Pb sub 86 blanket for a mirror reactor was performed. The blanket consists of 5 cm diameter SiC tubes, filled with molten Li sub 17 Pb sub 86 breeding material. The Li-Pb is recirculated to provide cooling. A study of auxiliary equipment design with low activation was also initiated in this year's program. The STARFIRE rf heating system design was used as a model for substitution of low activation materials. A MARS pump beam line is used as a model to evaluate low activation neutral beams for fusion. Aluminum alloys and Al/SiC composites provide high strength structural materials. Al sub 2 O sub 3 and MgO are useful electrical insulators, and high purity aluminum can be substituted for copper in the magnet coils. (ERA citation 10:008000)