Abstract : This system study extrapolates present physics knowledge and technology to predict the anticipated characteristics of D-He3 spherical torus fusion reactors and their sensitivity to uncertainties in important parameters. Reference cases for steady-state 1000 MWe reactors operating in H-made in both the 1st stability regime and the 2nd stability regime were developed and assessed quantitatively. These devices would a very small aspect ratio (A=1,2), a major radius of about 2.0 m, an on-a%,,44s magnetic field less than 2 T, a large plasma current (80-120 MA) dominated by the bootstrap effect, and high plasma beta (>O.6). The estimated cost of electricity is in the range of 60-90 mills/kW-hr, assuming the use of a direct energy conversion system. The inherent safety and environmental advantages of D-He3 fusion indicate that this reactor concept could be competitive with advanced fission breeder reactors and large-scale solar electric plants by the end of the 21st century if research and development can produce the anticipated physics and technology advances. Nuclear Science and Technology, Fusion Energy.
Descriptors : *CONTROLLED NUCLEAR FUSION, CONVERSION, COSTS, ELECTRICITY, ENERGY CONVERSION, MAGNETIC FIELDS, PARAMETERS, SCALE, SENSITIVITY, STABILITY, STEADY STATE, UNCERTAINTY, ELECTRIC POWER PRODUCTION.
Subject Categories : FUSION DEVICES (THERMONUCLEAR)