Abstract
The Japan Atomic Energy Research Institute (JAERI) has been developing large superconducting coils for fusion device. In future, current lead rated at 50-100kA will be required for the fusion superconducting coils. For this purpose, JAERI tested current leads of several configurations up to 30kA and measured thermal characteristics of the current leads. This paper describes comparison between test results and theoretical thermal calculations based on ideal heat exchange.
