Title :
Design and Development of 16-kA HTS Current Lead for HMFL 45-T Magnet
Author :
Tingzhi Zhou ; Kun Lu ; Kaizhong Ding ; Yuntao Song
Author_Institution :
Inst. of Plasma Phys., Hefei, China
Abstract :
The High Magnetic Field Laboratory developed a 45-T hybrid magnet. To test this magnet, a new pair of high-temperature superconducting current leads rated at 16 kA were developed. This paper addresses the design and test of those current leads. To minimize heat loads at the cold end, Bi-2223 high-temperature superconductors were used. The foil-type main heat exchanger is cooled by 77-K liquid nitrogen (LN2) and gas nitrogen (GN2). The busbar for International Thermonuclear Experimental Reactor, an Nb-Ti low-temperature superconducting (LTS) cable, is used to connect the magnet coil for easy access to the LTS cable. The insulation on the current lead was designed on the test target of 10 kV.
Keywords :
heat exchangers; high-temperature superconductors; niobium; superconducting cables; superconducting coils; superconducting magnets; titanium; Bi-2223 high-temperature superconductors; GN2; High Magnetic Field Laboratory; International Thermonuclear Experimental Reactor; LN2; LTS cable; Nb-Ti; Nb-Ti low-temperature superconducting cable; busbar; foil-type main heat exchanger; gas nitrogen; heat loads; high-temperature superconducting current leads; hybrid magnet; liquid nitrogen; magnet coil; magnetic flux density 45 T; temperature 77 K; voltage 10 kV; Copper; Heating; High-temperature superconductors; Insulation; Joints; Lead; Superconducting magnets; Bi-2223; Nb-Ti; Nb???Ti; current lead; heat exchanger; insulation;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2015.2409194
