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

Volume

25

Issue

4

fYear

2015

fDate

Aug. 2015

Firstpage

1

Lastpage

6

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2015.2409194

Filename

7055283