Title :
Reduced filament bundle diameters for improved hysteresis loss in modified jelly roll Nb/sub 3/Sn wires
Author :
McKinnell, J.C. ; O´Larey, P.M. ; Siddall, M.B.
Author_Institution :
Teledyne Wah Chang, Albany, OR, USA
fDate :
6/1/1995 12:00:00 AM
Abstract :
Fusion applications require moderate superconducting critical current densities with low AC loss. We have investigated the possibility of reduced hysteresis loss by reducing the filament bundle diameter. For a coupled filament bundle, this reduces the volume screened by supercurrents thus reducing the hysteresis loss. We present results which show the method is effective albeit the present goal has not yet been reached.<>
Keywords :
critical current density (superconductivity); fusion reactor design; fusion reactor materials; fusion reactors; magnetic hysteresis; magnetic leakage; multifilamentary superconductors; niobium alloys; superconducting coils; superconducting device testing; superconducting magnets; tin alloys; type II superconductors; ITER; Nb/sub 3/Sn; coupled filament bundle; fusion applications; improved hysteresis loss; low AC loss; moderate superconducting critical current densities; modified jelly roll Nb/sub 3/Sn wires; reduced filament bundle diameters; reduced hysteresis loss; supercurrents volume screening reduction; type II superconductor; Coolants; Copper; Critical current density; Hysteresis; Large-scale systems; Multifilamentary superconductors; Niobium; Superconducting cables; Superconducting filaments and wires; Tin;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
