Effect of transverse compressive stress on the critical current of cabled Nb/sub 3/Sn conductor
Conference
·
· IEEE Trans. Magn.; (United States)
OSTI ID:6042380
A test apparatus has been designed and built for the investigation of cabled conductors subjected to transverse load. The apparatus permits measurement of compressive stress on a loaded multistage flat cable when a transport current is applied to one of its constituent sub-cables. With the apparatus, the critical current behavior of a solder-filled Nb/sub 3/Sn cable made by the external diffusion method, exposed to transverse loads up to 165 MPa, was investigated. A field-dependent degradation of the critical current was found. The effect is completely reversible up to about 100 MPa. Solder-filled cables as used in large current applications are less sensitive to transverse compressive stress than single-wires. 150 MPa compressive load on the SULTAN cable, for example, will degrade the critical current by 31 % at 11 T. This is still a high enough value in view of the large transverse compressive stresses acting on conductors required for fusion magnets.
- Research Organization:
- Paul Scherrer Institute, CH-5234 Villigen (CH)
- OSTI ID:
- 6042380
- Report Number(s):
- CONF-880812-
- Conference Information:
- Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: 25:2
- Country of Publication:
- United States
- Language:
- English
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DESIGN
ELECTRIC CABLES
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MAGNETIC FIELDS
MAGNETS
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
PERFORMANCE TESTING
STRESSES
SUPERCONDUCTING CABLES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
TESTING
THERMONUCLEAR DEVICES
TIN ALLOYS