Normal state resistance and low temperature magnetoresistance of superconducting cables for accelerator magnets

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6571366

Sampson, W B; Garber, M; Ghosh, A K

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
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430300 -- Particle Accelerators-- Auxiliaries & Components
656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACCELERATORS
CABLES
CONDUCTOR DEVICES
ELECTRIC CABLES
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
MAGNETIC FIELDS
MAGNETORESISTANCE
PHYSICAL PROPERTIES
SPECIFICATIONS
SUPERCONDUCTING CABLES