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Quench transients in internally cooled conductors

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4 Author(s)
Walters, C. ; Rutherford Appleton Laboratory, Didcot, England ; Wilson, M. ; Ross, J. ; Liddle, M.

A 70 Kg superconducting coil using an internally cooled cabled conductor has been made and tested in order to verify computer-predicted phenomena such as occur during quenching. A satisfactory correlation between the theoretical predictions and the experimental results was obtained in respect of the pressures generated during a quench; these were much lower than predicted by simple theory. Resistive voltage, temperature, and propagation velocity were monitored at two current levels (5 kA and 7.5 kA) and in general were similar to the computed results. The coil was energized to 10.5 kA without training, this current exceeded the short sample characteristic of the conductor.

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Magnetics, IEEE Transactions on  (Volume:19 ,  Issue: 3 )