Test System Upgrade for ITER Current Lead Series Production at ASIPP

The Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP), is in charge of the manufacturing and testing of the 60 high-temperature superconducting current lead series to be completed at the end of 2020 for the International Thermonuclear Experimental Reactor (ITER). This paper first summarizes the testing items and testing results of the ITER lead prototypes in 2015/2016, then, based on the prototypes experiences, discuss the final test piping and instrument diagram for the ITER lead series production testing. A new 5-K test platform to expedite the series testing is also introduced, and a new feature, the 30-kV high-voltage (HV) class insulation for the cryogenic temperature and voltage measurements to allow in situ HV testing, is introduced. The detailed test procedures and test items for the series are discussed finally.