Title :
13 kA current lead with textured YBCO plates
Author :
Larsen, J.G. ; Kristensen, B. ; Sommerschield, J.G. ; Frost, E.
Author_Institution :
Haldor Topsoe, Lyngby, Denmark
fDate :
6/1/1999 12:00:00 AM
Abstract :
At Haldor Topsoe A/S, the authors have developed a texturing process by which they produce YBCO high temperature superconductor plates with high current densities and low thermal conductivity suitable for current leads between 77 K and 4 K. In their design of such a lead, the superconductor is quench protected by a shunt with low heat leak and the brittleness of the YBCO material has been overcome by reinforcement. The lead has been tested by CERN and has fulfilled CERN´s specifications concerning current capacity, total heat leak, contact resistances and quench protection of the superconductor.
Keywords :
barium compounds; copper compounds; high-temperature superconductors; superconducting cables; surface texture; yttrium compounds; 13 kA; 77 to 4 K; CERN; YBaCuO; contact resistance; current capacity; current densities; design; high-temperature superconductor; quench protection; superconducting current lead; textured YBaCuO plates; texturing process; thermal conductivity; total heat leak; Conducting materials; Current density; High temperature superconductors; Protection; Resistance heating; Superconducting materials; Testing; Thermal conductivity; Thermal quenching; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
