Title :
HTS Coils Fabrication From Commercial 2G YBCO Tapes: Measurements and Simulation
Author :
Besi Vetrella, U. ; Celentano, Giuseppe ; Marchetti, Mirco ; Messina, Giacomo ; Morici, L. ; Sabatino, Paul ; Viola, R. ; della Corte, Antonio
Author_Institution :
EURATOM-ENEA Assoc. on Fusion, Frascati, Italy
Abstract :
In this paper, YBCO-based commercial wire (tape) has been used for fabricating coils in doubled pancake configuration assembly. The tape has been wound on a circular-shaped support; lap joints between coils have been realized with particular attention to resistance minimization. Each high-temperature superconducting coil by itself, and the assembly afterward, has been powered and the current-voltage curves at different temperatures have been measured using a four-probe technique. Critical currents have been computed by using the electric field criteria. Applied magnetic field was both in perpendicular and parallel configuration. A magneto-static finite element model has been developed by using commercial software, in order to check the agreement with experimental results.
Keywords :
barium compounds; critical currents; electric resistance; finite element analysis; high-temperature superconductors; magnetostatics; minimisation; superconducting coils; superconducting tapes; yttrium compounds; 2G YBCO tapes; YBCO; YBCO-based wire; applied magnetic field; circular-shaped support; critical currents; current-voltage curves; doubled pancake configuration assembly; electric field criteria; four-probe technique; high-temperature superconducting coil fabrication; lap joints; magnetostatic finite element model; parallel configuration; perpendicular configuration; resistance minimization; Coils; Critical current density (superconductivity); Integrated circuits; Magnetic field measurement; Wires; Yttrium barium copper oxide; Coated conductor; YBCO; energy storage;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2013.2282298
