Evaluation of a cryostable low-loss conductor for pulsed field applications
A cryostable, low loss conductor as the basic strand in a 50 kA cable for a 20 MJ prototype, tokamak induction heating coil has been developed, fabricated, and evaluated. The conductor has a copper matrix multifilamentary NbTi core surrounded by a CuNi ring and stabilizing copper segmented by radial CuNi fins. Pulsed loss measurements have been made up to 2.2 T and for decay times from 0.7 to 278 ms. Measurements made on samples with various twists and portions etched away have allowed accurate evaluation of the loss components. Stability measurements were also made on insulated and uninsulated single strands and on subcables. Measured recovery heat flux for the bare strand is about 0.3 W/cm/sup 2/; however, the application of a 0.0005 in. layer of Omega insulation increases the value to about 0.5 W/cm/sup 2/.
- Research Organization:
- Los Alamos Scientific Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6840748
- Report Number(s):
- LA-UR-80-3142; CONF-800980-29
- Country of Publication:
- United States
- Language:
- English
Similar Records
Comparison of two ICCS conductors for MHD application
Effects of Formvar coating and copper-nickel outer sheath on the ac losses of multi-strand subsize cables
Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700202 -- Fusion Power Plant Technology-- Magnet Coils & Fields
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALLOYS
CABLES
CONDUCTOR DEVICES
DESIGN
ELECTRIC CABLES
ELECTRIC HEATING
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ENERGY LOSSES
EQUIPMENT
HEATING
JOULE HEATING
LOSSES
MAGNETS
NIOBIUM ALLOYS
PERFORMANCE
PLASMA HEATING
RESISTANCE HEATING
SUPERCONDUCTING CABLES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
THERMONUCLEAR REACTORS
TITANIUM ALLOYS
TOKAMAK TYPE REACTORS