The configuration development of the superconducting magnets for the SSAT-S tokamak device

The Steady State Advanced Tokamak (SSAT) device will be developed to demonstrate steady-state tokamak operations and optimize plasma conditions in a steady-state environment. The authors describe the configurational development of the SSAT device to meet the physics objectives and subsystem design requirements. Superconducting toroidal field (TF) and poloidal field (PF) coils are planned, as they are well suited for the long-pulse, high-duty-factor operation of the SSAT mission. A two-coil TF module forms the basis of the tokamak core. PF coils, consisting of a solenoid and six ring-coils, surround the TF coils. The physics requirement of low field ripple and sufficient plasma access for tangential neutral beams influenced the configuration in determining the size and number of TF coils. Further configuration influences included low activation considerations, divertor pumping, service line access, requirements for remote maintenance, and compatibility with the existing TFTR test cell facility. >