An 8 T Superconducting Split Magnet System With Large Crossing Warm Bore

Author

Dai, Yinming ; Wang, Qiuliang ; Wang, Housheng ; Zhao, Baozhi ; Song, Shousen ; Chen, Shunzhong ; Lei, Yuanzhong ; Huang, Hou-Cheng

Author_Institution

Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing, China

Volume

20

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

608

Lastpage

611

Abstract

A conduction-cooled superconducting split magnet system with large crossing warm bore is designed and will be developed for material processing applications. The magnet is composed of eight coaxial coils and assembled in the form of split coil groups. Both the Bi2223/Ag HTS superconducting tape and NbTi LTS superconducting wires are used to generate a central magnetic field of 8 T, maximum of 11 T in the horizontal warm bore. The split gap between the coils is as large as 136 mm to accommodate the crossing warm bore of 100 mm in diameter. The superconducting split magnet will be conduction-cooled by two GM cryocoolers. The HTS coils and NbTi coils are to be operated in driven mode with two independent power supplies. The operation currents are 200 A (HTS) and 136 A (NbTi) respectively. Magnetic design, stress and strain analysis as well as magnet operation and protection are presented in this paper.

Keywords

bismuth compounds; calcium compounds; cryogenics; high-temperature superconductors; niobium alloys; silver; strontium compounds; superconducting coils; superconducting magnets; superconducting tapes; titanium alloys; Bi₂Sr₂Ca₂Cu₃O_10+x-Ag; GM cryocoolers; HTS coils; HTS superconducting tape; LTS superconducting wires; NbTi; coaxial coils; conduction cooling; current 136 A; current 200 A; large crossing warm bore; magnetic flux density 11 T; magnetic flux density 8 T; size 100 mm; superconducting split magnet system; Conduction-cooled; HTS; large bore; split magnet; superconducting magnet;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2042940

Filename

5443659