Development of a Superconducting Joint for High Field NMR

Author

Fukuzaki, T. ; Maeda, H. ; Matsumoto, S. ; Nimori, S. ; Yokoyama, S. ; Kiyoshi, T.

Author_Institution

Genomic Sci. Center, RIKEN, Yokohama

Volume

16

Issue

2

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

1547

Lastpage

1549

Abstract

The innermost coil of a new high-field NMR magnet such as a 1-GHz NMR magnet is designed by using a new superconductor. It is therefore important that a superconducting joint between the new superconductor and the NbTi conductor was developed. We have developed a new superconducting joint method for the Nb₃Al conductor, which is expected to be used for the innermost coil of the 1-GHz NMR magnet. This joint method uses the Nb₃Sn layer that is formed on the Nb matrix surface of the Nb₃Al conductor. This Nb₃Sn layer enables the soldering of the Nb₃Al conductor; thus, it is possible to solder the Nb₃Al conductor and NbTi conductor. The superconducting property of the Nb₃Al-NbTi joint that is joined by the superconducting solder (for example, SnBiPb solder) showed good performance under a magnetic field of 0.1 T

Keywords

NMR spectroscopy; aluminium alloys; bismuth alloys; lead alloys; niobium alloys; solders; superconducting magnets; tin alloys; titanium alloys; 0.1 T; 1 GHz; NMR magnet; Nb matrix surface; Nb₃Al-SnBiPb-NbTi; Nb₃Sn; conductor; high field NMR magnet; magnetic field; soldering; superconducting joint method; superconducting magnets; superconducting property; superconducting solder; Conductors; Magnetic properties; Niobium compounds; Nuclear magnetic resonance; Soldering; Superconducting coils; Superconducting epitaxial layers; Superconducting magnets; Tin; Titanium compounds; 1-GHz NMR; superconducting joint;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2006.870842

Filename

1643150