Joint resistance measurements of pancake and terminal joints for JT-60SA EF coils

• To evaluate the joint fabrication technology for the JT-60SA EF coils, joint resistance measurements were conducted with a joint sample.
• The joint sample was composed of pancake and terminal joints.
• The measurements demonstrated that both joints fulfilled the design requirement.
• Considering the measurements, the characteristics of both joints were investigated using an analytical model that represents the joints.

To evaluate the joint fabrication technology for the JT-60SA EF coils, joint resistance measurements were conducted using a sample consisting of pancake and terminal joints. Both joints are shake-hands lap joints composed of cable-in-conduit conductors and a pure copper saddle-shaped spacer. The measurements demonstrated that both joints fulfilled the design requirement. Considering these measurements, the characteristics of both joints were investigated using analytical models that represent the joints. The analyses indicated that the characteristics of the conductors used in the joints affect the characteristics of the joints.