CONDUCTORS FOR A 1 GHZ SUPERCONDUCTING MAGNET

The development of a high resolution high-field 1 GHz NMR spectrometer has been undertaken by Battelle Pacific Northwest Laboratories (BPNL) . In preparation for the design of the superconducting magnet for that instrument, BPNL sponsored a program to measure the properties at hig h field (up to 23.5 T) and low temperature (1.8 K) of a number of comm ercially available superconductors. Lengths of these conductors were o btained and tested as short samples and in small coils. The critical c urrent densities, index values and strain dependence of these properti es were characterized. The potential applications of these conductors in construction of a 1 GHz NMR magnet are discussed.