Title :
The construction and performance of BSCCO 2212 coils for use in liquid nitrogen at 64 K on an iron yoke in demonstrator devices
Author :
Jenkins, R.G. ; Jones, H. ; Ming Yang ; Goringe, M.J. ; Grovenor, C.R.M.
Author_Institution :
Clarendon Lab., Oxford Univ., UK
fDate :
6/1/1995 12:00:00 AM
Abstract :
The construction of 6 HTS coils from composite tapes of a silver alloy dip-coated with BSCCO 2212 is described. Data are presented on the coil critical currents at temperatures over the range 4.2 K to 77.3 K, including the results of a measurement in liquid neon. A small magnet constructed from two of the coils generated a peak field of 0.434T at 4.2 K. A "demonstrator" device is described in which the cells are mounted on an iron yoke, are immersed in liquid nitrogen refrigerated to 64 K using a novel technique, and provide ampere-turns to generate a magnetic field in the air gap between two room temperature pole-pieces. This apparatus is intended for use in a programme of research to investigate the controllability of superconducting magnets in attractive magnetic levitation applications.<>
Keywords :
bismuth compounds; critical current density (superconductivity); high-temperature superconductors; strontium compounds; superconducting coils; superconducting magnets; superconducting tapes; 0.434 T; 4.2 to 77.3 K; BSCCO 2212 coils; BiSrCaCuO coils; Fe; air gap; controllability; critical currents; demonstrator devices; dip-coating; iron yoke; liquid neon; liquid nitrogen; magnetic field generation; magnetic levitation applications; room temperature pole-pieces; silver alloy; superconducting coils; superconducting composite tapes; superconducting magnets; Bismuth compounds; Coils; Critical current; High temperature superconductors; Iron; Magnetic levitation; Nitrogen; Silver; Superconducting magnets; Temperature distribution;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
