Title :
DC transport current measurements on prototype high Tc superconducting wires in pulsed magnetic fields up to 41 Telsa
Author :
Hole, C.R.J. ; Jones, H. ; Burgoyne, J.W. ; Dew-Hughes, D. ; Grovenor, C.R.M. ; Goringe, M.J.
Author_Institution :
Clarendon Lab., Oxford Univ., UK
fDate :
6/1/1995 12:00:00 AM
Abstract :
DC transport current measurements on prototype superconducting wire artefacts have been made in pulsed magnetic fields up to 41 T. The measurements were made over 9 cm lengths of wire wound helically round a 1 cm diameter former. Both powder in tube and open tape wire have been tested and it was found that the open tape performed significantly better under the action of the pulsed field than the powder in tube material. Significant differences in determined critical currents measured by this and conventional techniques are seen. It is believed that this is the result of eddy current heating in the silver substrate since such differences are not present in samples with electrically insulating substrates.<>
Keywords :
bismuth compounds; calcium compounds; composite superconductors; critical currents; eddy currents; high-temperature superconductors; strontium compounds; superconducting tapes; 41 tesla; 9 cm; Ag substrate; BiSrCaCuO; DC transport current measurements; critical currents; eddy current heating; electrically insulating substrates; open tape wire; powder in tube; prototype high Tc superconducting wires; pulsed magnetic fields; Current measurement; High temperature superconductors; Length measurement; Magnetic field measurement; Materials testing; Powders; Prototypes; Pulse measurements; Superconducting filaments and wires; Wounds;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
