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Quench properties of high current superconductors

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2 Author(s)
Garber, M. ; Brookhaven National Laboratory, Upton, New York ; Sampson, W.B.

A technique has been developed which allows the simultaneous determination of most of the important parameters of a high current superconductor. The critical current, propagation velocity, normal state resistivity, magnetoresistance, and enthalpy are determined as a function of current and applied field. The measurements are made on non-inductive samples which simulate conditions in full scale magnets. For wide, braided conductors the propagation velocity was found to vary approximately quadratically with current in the 2 to 5 kA region. A number of conductors have been tested including some Nb3Sn braids which have critical currents in excess of 10 kA at 5 T, 4.2K.

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Magnetics, IEEE Transactions on  (Volume:17 ,  Issue: 1 )