A New Testing Device for Bending Strain Effect on Superconducting Wires

China Fusion Engineering Test Reactor (CFETR) is a new tokamak device whose magnet system includes toroidal field (TF), central solenoid (CS) and poloidal field (PF) coils which are made up of CICC (Cable-in-Conduit Conductor). The maximum field of CS and TF will reach around 15 T, which is much higher than that of present reactors. However, strong Lorentz force will cause the deformation of superconducting wires in CICC, and therefore cause the degradation of superconducting performance of the wires. Study about deformation impact on both the transport properties and the superconducting transition is essential for optimal cable and magnet design. In this paper, a new testing device which can be used to measure the bending effect on superconducting wires is presented.