DT AND DHe**3 TOKAMAK TEST REACTOR CONCEPTS USING ADVANCED, HIGH FIELD SUPERCONDUCTORS.

Possibilities for test reactor designs using high-temperature high-field superconductors are discussed. An illustrative design has a field at the plasma of 15 T. This reduces the required beta to less than 2% for DT operation. The required plasma current is 5 MA. For a reactor size of R//0 equals 3. 4 m and a equals 0. 6 m, the neutron wall loading is 3. 3 MW/m**2 at beta equals 1. 5% for DT operation and an equal amount of fusion power is produced at beta equals 10% for DHe**3 operation. One possible mode of operation is to use ohmic heating ignition in a DT plasma followed by thermal runaway to DHe**3 temperatures.