Title :
A conduction cooled superconducting magnet using high-Tc oxide current leads
Author :
Hata, F. ; Sakuraba, J. ; Chong, C.K. ; Yamada, Y. ; Hasebe, T. ; Ishihara, M. ; Watanabe, K.
Author_Institution :
Inst. for Mater. Res., Tohoku Univ., Sendai, Japan
fDate :
7/1/1994 12:00:00 AM
Abstract :
We demonstrated a conduction cooled (Nb,Ti)3Sn superconducting magnet system without liquid helium. The magnet system is mainly composed of (Nb,Ti)3Sn superconducting coil, high-T c oxide current leads, a GM cryocooler and a cryostat. The (Nb,Ti)3Sn superconducting coil cooled by the second stage of the cryocooler is operated at 11 K in vacuum. The cylindrical (Bi,Pb) 2Sr2Ca2Cu3 oxide current leads were cooled below 77 K by the cryocooler. This system generates a magnetic field of 4.6 T in a 38 mm room temperature bore at the operating current of 465 A. Two hours holding at the operating current of 400 A were performed
Keywords :
bismuth compounds; cryostats; high-temperature superconductors; lead compounds; niobium alloys; strontium compounds; superconducting magnets; superconducting materials; tin alloys; titanium alloys; (BiPb)2Sr2Ca2Cu3O; (Nb,Ti)3Sn superconducting magnet; (NbTi)3Sn; 11 K; 2 h; 293 K; 38 mm; 4.6 T; 400 A; 465 A; 77 K; GM cryocooler; conduction cooled superconducting magnet; cryostat; cylindrical (Bi,Pb)2Sr2Ca2Cu3 oxide current leads; high temperature superconductor oxide current leads; magnetic field; operating current; room temperature bore; superconducting coil; Boring; Cooling; Copper; Critical current; Lead compounds; Magnetic materials; Magnetic shielding; Superconducting coils; Superconducting magnets; Superconducting materials;
Journal_Title :
Magnetics, IEEE Transactions on
