Design and Analysis of Full Size Joint Sample for ITER PF Coil

Abstract

Joints are essential components of poloidal field coil in fusion device, serving as an electric and coolant transfer between adjacent superconductors. The design of full size joint sample has been carried out by ASIPP. In the future, this sample will be tested in the Sultan facility at Villigen. The test contents include joint total resistance at 4.2 K and 55 kA with 2 T external field, and AC losses at 4.2 K and 45 kA with an external field varying from 0 to 2 T in 1 s. This paper mainly describes the design and analysis of full size joint sample. This sample is composed of two single conductor legs, a praying-hand joint to be placed in the high field, and two terminals to be connected to the transformer of the test facility. The temperature sensors and voltage taps are used for measuring and calculating the DC resistance and AC loss. In order to support the design, the electromagnetic and mechanical analyses are performed. According to the electromagnetic and mechanical analyses, the results show that this design is feasible.