The 50 kA Superconducting Transformer for Testing ITER CC Conductors Short Sample

To meet the specification of International Thermonuclear Experimental Reactor (ITER) Correction Coil (CC) conductors, the 50 kA superconducting transformer has been designed which allows rating of conductor samples during different operating conditions at the Institute of Plasma Physics, the Chinese Academy of Sciences (ASIPP). The superconducting transformer consists of two concentric layer-wound superconducting solenoids with the primary inside the secondary. The 50 kA secondary conductor consists of 4 turns of rectangular cable-in-conduit conductor (CICC) type used of the 0.87 mm NbTi superconductor strands. This paper describes the basic principles of superconducting transformer, the designed concept of the 50 kA superconducting transformer.