I. Introduction
The magnet system in JT-60 Super Advanced (JT-60SA) consists of 18 toroidal field (TF) coils, 4 stacks of central solenoid (CS) and 6 plasma equilibrium field (EF) coils [1], [2]. The EF coil conductors are designed with NbTi cable in conduit (CIC) conductor because maximum magnetic field is up to 6.2 T [3], [4]. The prototype NbTi conductor was developed and tested to confirm the capability of real conductor by Japan Atomic Energy Agency (JAEA) and National Institute for Fusion Science (NIFS).