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Stability and normal zone propagation in YBCO CORC cables [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. High Energy Physics Division, 2016.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
Article numbers 044,006 : digital, PDF file
Additional Creators
Ohio State University, United States. Department of Energy. High Energy Physics Division, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
In this study, a two layer conductor on round core cable was tested for stability and normal zone propagation at 77 K in a liquid nitrogen bath. The cable was instrumented with voltage taps and wires on each strand over the cable’s central portion (i.e. excluding the end connections of the cable with the outside world). A heater was placed in the central zone on the surface of the cable, which allowed pulses of various powers and durations to be generated. Shrinking (recovering) and expanding (not recovering) normal zones have been detected, as well as stationary zones which were in thermal equilibrium. Such stationary thermal equilibrium zones did not expand or contract, and hit a constant upper temperature while the heater current persisted; they are essentially a form of Stekly stability. Overall, the cable showed a high degree of stability. Notably, it was able to carry a current of 0.45Ic cable with maximum temperature of 123 K for one minute without damage.
Report Numbers
E 1.99:1337875
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Note
Published through SciTech Connect.
03/11/2016.
Superconductor Science and Technology 29 4 ISSN 0953-2048 AM
M. Majoros; M. D. Sumption; E. W. Collings; D. van der Laan.
Funding Information
SC0011721
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