The US demonstration poloidal coil

The United States Demonstration Poloidal Coil (US-DPC) has been built and will be tested at the Japan Atomic Energy Research Institute (JAERI). The 2-m-diameter, 30-kA, Nb/sub 3/Sn solenoid is designed for 10-T operation with charging and discharging from zero to full field at ramp rates of up to 10 T/s. The fabrication is described. A summary of problems encountered in the manufacture of the wind-react-insulate coil made from cable-in-conduit conductor (CICC) is given.