Measurement System in Large-Scale Superconducting Magnet Performance Test

A cryogenic test facility for a superconducting magnet has been constructed at the Institute of Plasma Physics, Chinese Academy of Science. A measurement system was set up to obtain quench signals and parameters in the test program, such as cryogenic hydraulic performances and electromagnetic characteristics. Thirty superconducting magnets in the Experimental Advanced Superconducting Tokamak device and a number of other magnets have been tested in the test system successfully. The design of the measurement system is introduced from the point of view of engineering practice. The measurement method of some parameters is also discussed in detail. The highlight lies in type selection installation techniques and instrumentation of sensors.