Development of 12 kA HTS Current Lead for Accelerator Magnet Test Application

A pair of 12 kA HTS current leads has been developed with a nitrogen vapor cooled resistive section and a stainless steel shunted HTS section using Bi2223/AgAu matrix tapes at the Institute of Plasma Physics, Chinese Academy of Science. These two leads, which need to transfer 21 kA in a short time, are intended as replacement leads for the accelerator magnet test program at the Joint Institute of Nuclear Research in Dubna. The structure design of the current leads is described. The test results are reported and discussed in this paper.