Title :
The Construction and Testing of YBCO Pancake Coils for a High Field Solenoid
Author :
Shiroyanagi, Y. ; Ghosh, A.K. ; Gupta, R. ; Sampson, W.B.
Author_Institution :
Supercond. Magn. Div., Brookhaven Nat. Lab., Upton, NY, USA
fDate :
6/1/2011 12:00:00 AM
Abstract :
Pancake coils are being fabricated using second generation (2G) High Temperature Superconductor (HTS) for a prototype 10 T solenoid. The length of conductor in each coil is 100 m and the inner diameter of the coil is 101 mm. The critical current of each coil was measured at 77 K in liquid nitrogen and down to ~20 K in helium gas. It has been observed that the effect of thermal shock during cool-down may cause coil performance to degrade irreversibly. The detailed results and the improvements to achieve 10 T will be discussed.
Keywords :
barium compounds; critical current density (superconductivity); high-temperature superconductors; solenoids; superconducting coils; thermal shock; yttrium compounds; 2G high temperature superconductor; YBCO; YBCO pancake coil; critical current; helium gas; high field solenoid; liquid nitrogen; second generation HTS; thermal shock; Coils; Conductors; Critical current; High temperature superconductors; Solenoids; Superconducting magnets; Temperature measurement; 2G HTS solenoid; Critical current; pancake coil; thermal degradation;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2097570
