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Coupling time constants for modified jelly roll Nb/sub 3/Sn wires

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3 Author(s)
McKinnell, J.C. ; Teledyne Wah Chang Albany, OR, USA ; Siddall, M.B. ; Smathers, D.B.

Measurement of the coupling time constant allows an estimate of the coupling loss in AC applications. The authors report the coupling time constants of modified jelly-roll niobium-tin (Nb/sub 3/Sn) wires which were measured using a modified version of the technique described by T. Ando et al. (1985, 1988). The coupling time constant is reported for over 200 km of wire at zero applied field. If the pulse field was large enough, two characteristic time constants were observed at zero field. The longer of the two time constants was not observed when a DC magnetic field of >or=0.1 T was applied to the sample. The field behavior of the coupling time constant from 0 to 6 T is also reported.<>

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:3 ,  Issue: 1 )