R&D Activities of Joint Manufacture for ITER Poloidal Field Coil

Electrical joints are critical components of the PF coil in the tokamak, serving as an electric and coolant transfer between adjacent conductors. The technologies and tooling used for joint manufacture are great challenges in coil fabrication, including termination box and cover manufacturing, jacket removal of the conductor, petals drawing apart and reformation, nickel coating removal and tin plating on the cable, compaction of the cable into the termination, final machining of the termination, etc. This paper mainly focuses on the solution of technical issues, based on previous R&D activities of joint. Meanwhile, a detailed manufacture plan has been confirmed. The technologies and tooling also can be used as reference for the electrical joint manufacture for PF coils and other large-scale coils.