Models for interpreting interstrand resistance measurements in Rutherford cables
Variations in the quench behavior of SSC dipole magnets with the current ramp rate have led to studies of the interstrand resistance in real magnet coils. These studies involve in-situ measurements of the resistance between pairs of superconducting strands in a keystoned 30 strand Rutherford cable used in SSC dipole magnets. Collared sections slightly longer than one cable twist pitch length are removed from the magnet so that interstrand resistance between one cable twist pitch length of strands can be measured. The magnitude of these measured resistances has been found to be in most cases dependent on the number of strands in line between the input and output strands. The measured values result from current crossing from the input to the output strand along several parallel paths within the multistand cable. A resistor network model is therefore required for deducing individual contact resistances based on the measured values. The derived contact resistances can then be used to correlate ramp rate quench sensitivity behavior to magnet fabrication and design and as input values for calculating eddy current losses.
- Research Organization:
- Superconducting Super Collider Lab., Dallas, TX (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC35-89ER40486
- OSTI ID:
- 10147400
- Report Number(s):
- SSCL-666; ON: DE94010844
- Resource Relation:
- Other Information: PBD: Mar 1994
- Country of Publication:
- United States
- Language:
- English
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