Title :
Calculating the Jc, B, T surface for niobium titanium using a reduced-state model
Author :
Green, Michael A.
Author_Institution :
Lawrence Berkeley Lab., California Univ., Berkeley, CA, USA
fDate :
3/1/1989 12:00:00 AM
Abstract :
A method is presented for calculating the Jc, B, T surface for commercial niobium titanium superconductor given Tc, Bc2 and Jc over a range B at a given temperature. The Jc calculated as a function of B and T agrees with measured values of Jc quite well over a range of T from 1.5 K to 7 K and a range of B from 0.1 T to 10 T. The values of Jc given by this theory are good enough to be used to calculate the performance of superconducting magnets at temperatures other than 4.2 K, and the theory can be used to predict the magnetization effects of superconductors over a wide range of temperatures and inductions
Keywords :
critical current density (superconductivity); niobium alloys; superconducting magnets; titanium alloys; type II superconductors; 0.1 to 10 T; 1.5 to 7 K; Jc-B-T surface; commercial Nb-Ti; critical current density; magnetic field dependence; magnetization effects; performance; reduced-state model; superconducting magnets; temperature dependence; Critical current; Critical current density; Helium; Magnetic field measurement; Multifilamentary superconductors; Niobium; Superconducting magnets; Superconducting materials; Temperature distribution; Titanium;
Journal_Title :
Magnetics, IEEE Transactions on
