A Tokamak Experimental Power Reactor

The ANL-TEPR has a major radius, R = 6.25, and a plasma radius, a = 2.1 m. Sixteen, pure-tension-D superconducting magnets, with minor bore, R/sub bore/ = 7.7 m, and vertical bore, Z = 11.9 m, provide a toroidal field of 34 kG in the plasma, with a maximum field ripple of 2 percent. A stainless-steel-B/sub 4/C blanket/shield, which is 1 m on the inside and 1.3 m on the outside, protects the magnets and converts the nuclear energy to sensible heat, which is removed by the primary coolant, helium or H/sub 2/O. The first wall is 2-cm-thick stainless steel with a 100-..mu..m low-Z coating on the plasma side, and operates at less than or equal to 550/sup 0/C. The toroidal vacuum chamber is pumped down from 10/sup -3/ to 10/sup -5/ torr between burn pulses by thirty-two 25,000 l/s cryosorption pumps, and 50,000 l/s cryosorption panels maintain the vacuum in the neutral beam injectors, which are used to heat the plasma.