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Title: Stability and normal zone propagation in YBCO CORC cables

Journal Article · · Superconductor Science and Technology
 [1];  [1];  [1];  [2]
  1. The Ohio State Univ., Columbus, OH (United States)
  2. Univ. of Colorado, Boulder, CO (United States)

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.

Research Organization:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0011721; SC0007891; SC0014009
OSTI ID:
1337875
Alternate ID(s):
OSTI ID: 1241434
Journal Information:
Superconductor Science and Technology, Vol. 29, Issue 4; ISSN 0953-2048
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

References (12)

HTS twisted stacked-tape cable conductor journal December 2011
Conductor Characterization of YBCO Twisted Stacked-Tape Cables journal June 2013
Development of Termination Methods for 2G HTS Tape Cable Conductors journal June 2014
High current DyBCO-ROEBEL Assembled Coated Conductor (RACC) journal June 2006
Transport and magnetization ac losses of ROEBEL assembled coated conductor cables: measurements and calculations journal December 2009
Stability, Inter-Strand Contact Resistance, and AC Losses in YBCO Roebel Cables journal June 2014
YBa 2 Cu 3 O 7−δ coated conductor cabling for low ac-loss and high-field magnet applications journal April 2009
High-current dc power transmission in flexible RE–Ba 2 Cu 3 O 7 − δ coated conductor cables journal December 2011
Characterization of a high-temperature superconducting conductor on round core cables in magnetic fields up to 20 T journal February 2013
Effect of variations in terminal contact resistances on the current distribution in high-temperature superconducting cables journal January 2015
Principles of Stability in Cooled Superconducting Magnets journal April 1969
Magnetization losses in superconducting YBCO conductor-on-round-core (CORC) cables journal November 2014

Cited By (3)

Quench behavior of high-temperature superconductor (RE)Ba 2 Cu 3 O x CORC cable journal June 2019
Dipole Magnets Above 20 Tesla: Research Needs for a Path via High-Temperature Superconducting REBCO Conductors journal November 2019
Impact of critical current fluctuations on the performance of a coated conductor tape journal October 2019

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