Normal state resistance and low temperature magnetoresistance of superconducting cables for accelerator magnets
The normal state resistivity of the superconducting NbTi cable used in accelerator magnets is usually specified by the resistance per unit length at room temperature (295 K) and the residual resistance ratio (RRR). Using these resistance parameters, the amount of copper in the multifilamentary wire can be calculated. This method is consistent with the traditional etch and weigh technique, and as such is a alternative and convenient way of specifying the copper to superconductor ratio. In principle the magnetoresistance can be calculated from the RRR and the ''Kohler Plot'', for copper. In practice however, measurements of magnetoresistance for a wide variety of SSC inner cables show considerable disagreement with calculation. In this paper the magnetoresistance data on cables with RRR ranging from 50 to 175 are analyzed taking into account the conductor geometry and the effect of the small interfilamentary spacing on the resistivity of copper. 8 refs., 5 figs., 1 tab.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6571366
- Report Number(s):
- BNL-41976; CONF-880812-30; ON: DE89004528
- Resource Relation:
- Conference: Applied superconductivity conference, San Francisco, CA, USA, 21 Aug 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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SUPERCONDUCTIVITY AND SUPERFLUIDITY
43 PARTICLE ACCELERATORS
SUPERCONDUCTING CABLES
MAGNETORESISTANCE
ACCELERATORS
ELECTRIC CONDUCTIVITY
MAGNETIC FIELDS
SPECIFICATIONS
CABLES
CONDUCTOR DEVICES
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
PHYSICAL PROPERTIES
656100* - Condensed Matter Physics- Superconductivity
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