Loss measurement in superconductor materials for high current densities subjected to current and field variations as for cryoalternators. Fina report

Technical Report · Mon Jul 01 00:00:00 EDT 1974

OSTI ID:7327036

Dubois, P

A loss measurement method applicable to high-intensity superconductors subjected to low-frequency variable induction is presented. An electrical method is used to determine the losses by integration of the volt--ampere product over time. The product is obtained by analog multiplication and integration performed numerically. The input current to the samples is monitored by a system, which is described in detail. Calibration was performed with a copper coil at liquid helium temperature. A 4% precision was obtained for an energy measurement of 4 microjoule. (GRA)

• Research Organization: Compagnie Generale d'Electricite (CGE), 91 - Marcoussis (France)
• DOE Contract Number: DGRST-73-7-1456
• OSTI ID: 7327036
• Report Number(s): N-76-20448
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SUPERCONDUCTING GENERATORS
ENERGY LOSSES
SUPERCONDUCTORS
AC LOSSES
ALTERNATORS
CURRENT DENSITY
ELECTRIC CURRENTS
ELECTROMAGNETIC FIELDS
FARADAY INDUCTION
MEASURING METHODS
TIME DEPENDENCE
ULTRALOW TEMPERATURE
VARIATIONS
CURRENTS
ELECTRIC GENERATORS
INDUCTION
SUPERCONDUCTING DEVICES
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