COMPARATIVE ANALYSIS OF THE POWER BALANCE FOR D- <sup>3</sup>HE FUSION PLASMA IN CLOSED MAGNETIC TRAPS
This paper reports on a comparative analysis of the magnetic fusion energy systems based on aneutronic D- <sup>3</sup>He fuel. The power balance for a reactor is described for plasma confinement inside closed field lines (region called separatrix). Numerical model of the fusion power density energy balance condition is considered for the closed magnetic traps (tokamak, spherical tokamak, stellarator, and compact toroid). D-T, D- <sup>3</sup>He, and D-D (catalyzed) fuel cycles are discussed. The conceptual designs use a D- <sup>3</sup>He fuel cycle and require advances in technology and physics for economical attractiveness. Neutronic aspects and main parameters are presented. Results from the systems analysis are summarized, and a comparison with the D-T-fueled tokamaks is included. The application of the plasma and engineering physics to the D- <sup>3</sup>He fuel cycle, however, is expected to produce a design that is competitive with fissile and fossil power plants.