DocumentCode
842182
Title
Fabrication and transport properties of MgB2 mono-core wire and solenoid coil
Author
Tanaka, K. ; Kitaguchi, H. ; Kumakura, H. ; Hirakawa, M. ; Yamada, H. ; Okada, M.
Author_Institution
Nat. Inst. for Mater. Sci., Ibaraki, Japan
Volume
15
Issue
2
fYear
2005
fDate
6/1/2005 12:00:00 AM
Firstpage
3180
Lastpage
3183
Abstract
Round 100 m long class MgB2 mono-core wires with Fe/Cu composite sheaths were successfully fabricated using an in situ PIT method. The Jc of the round MgB2/(Fe/Cu) wires reached 380 A/mm2 at 4.2 K and 6 T, and exceeded 2500 A/mm2 at 3 T. High areal reduction of the MgB2 core was found to be effective in improving the transport properties of the MgB2 wires. Using a 58 m long MgB2/(Fe/Cu) wire, we made a solenoid coil with 495 turns and tested it in liquid helium. The dimensions of the MgB2 coil were 30 mm in inner diameter, 48 mm in outer diameter, and 50 mm in height. The Ic of the coil reached 214 A, which corresponds to a Jcoil=238 A/mm2 and a core-Jc=1420 A/mm2. The coil generated a magnetic field at a center of Bo=2.05 T and a maximum magnetic field of Bm=2.17 T.
Keywords
composite superconductors; critical current density (superconductivity); magnesium compounds; materials preparation; superconducting coils; type II superconductors; wires; 100 m; 214 A; 4.2 K; 48 mm; 50 mm; 58 m; 6 T; Fe-Cu; Fe/Cu composite sheaths; MgB2; MgB2 superconductor; critical current density; in situ PIT method; monocore wire; solenoid coil; transport properties; Conducting materials; Fabrication; Helium; Iron; Magnetic fields; Magnetic materials; Solenoids; Superconducting coils; Superconducting filaments and wires; Testing; Critical current density; Fe/Cu composite sheaths; mono-core wire; solenoid coil;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2005.848778
Filename
1440346
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