Title :
Critical current capacity of superconductors at different AC frequencies
Author :
Karasik, V.R. ; Vysotsky, V.S. ; Derjagin, S.G. ; Tsikhon, V.N.
Author_Institution :
P.N. Lebedev Phys. Inst., Acad. of Sci., Moscow, USSR
fDate :
3/1/1991 12:00:00 AM
Abstract :
The measurement of quench currents of sample coils at frequencies from 0 to 1000 Hz in an external magnetic field are presented. Coils were wound with multifilamentary Nb-Ti wires with various diameters in pure high-resistivity matrices with different resistivities. The influence of cooling on quench in the AC mode was studied. The stability of the wire increased with improved cooling and increased magnetic field. Results were analyzed from the point of view of the theory of stability, which takes into account real voltage-current characteristics of the wires
Keywords :
coils; composite superconductors; critical currents; niobium alloys; superconducting magnets; titanium alloys; type II superconductors; 0 to 1000 Hz; AC frequencies; AC mode; coils; critical current capacity; external magnetic field; high-resistivity matrices; multifilamentary Nb-Ti wires; quench currents; stability; superconductors; voltage-current characteristics; Cooling; Critical current; Current measurement; Frequency measurement; Magnetic field measurement; Multifilamentary superconductors; Superconducting coils; Superconductivity; Wires; Wounds;
Journal_Title :
Magnetics, IEEE Transactions on
