Title :
YBaCuO current lead for liquid helium temperature applications
Author :
Grivon, P. ; Leriche, A. ; Cottevieille, C. ; Kermarrec, J.C. ; Petitbon, A. ; Fevrier, A. ; Laumond, Y.
Author_Institution :
Lab. de Marcoussis, Centre de Recherches de la CGE, France
fDate :
3/1/1991 12:00:00 AM
Abstract :
A study was made of the losses of a double current lead (copper from 300 K to 77 K and YBaCuO from 77 K to 4.2 K). The authors give the main results obtained: (1) on the value of 1/Jc∫ 4.2 K77 KKdT, (2) on the electrical contact resistance between YBaCuO and metal, (3) on the transport critical current density and 50-Hz losses of sintered tubes and textured material, and (4) on a 1-kA double DC current lead. On the basis of these results, it seems possible to decrease the current lead losses by a factor of 5
Keywords :
barium compounds; contact resistance; critical current density (superconductivity); eddy current losses; high-temperature superconductors; magnetic leakage; superconducting cables; yttrium compounds; 1 kA; 300 to 77 K; 77 to 4.2 K; Cu lead; YBaCuO current lead; cryogenic use; double DC current lead; electrical contact resistance; high-temperature superconductor; losses; sintered tubes; textured material; transport critical current density; Conducting materials; Cooling; Helium; Pareto optimization; Resistance heating; Superconducting coils; Superconducting devices; Temperature; Thermal conductivity; Yttrium barium copper oxide;
Journal_Title :
Magnetics, IEEE Transactions on
