학술논문
Critical current and n-value of Nb/sub 3/Sn conductors for the wide bore 900 MHz NMR magnet
Document Type
Periodical
Source
IEEE Transactions on Applied Superconductivity IEEE Trans. Appl. Supercond. Applied Superconductivity, IEEE Transactions on. 9(2):2513-2516 Jun, 1999
Subject
Language
ISSN
1051-8223
1558-2515
2378-7074
1558-2515
2378-7074
Abstract
Electrical characterization of Nb/sub 3/Sn superconductor for application in a 900 MHz wide bore NMR magnet is performed. The magnet has five coils containing bronze process niobium-tin superconductor. Short samples of each of the five conductor types are reacted in a similar manner as the coils and the critical currents are measured. The samples are mounted across a Ti-6Al-4V shunt and the tests are conducted in background fields up to 19.45 T and at temperatures of 4.2 K and 1.8 K. Descriptions of the superconductor configurations and experimental procedure are given. The measured critical current and the current-voltage relationship of each conductor as expressed by the index number (n-value) are presented.