Conductively cooled Nb/sub 3/Sn magnet system for a magnetic refrigerator

A Nb/sub 3/Sn magnet system for use in a magnetic refrigerator has been developed and tested. The system incorporates four asymmetric windings arranged as two Helmholtz pairs to produce two profiled field regions, required for a Carnot cycle. System components are cooled by conductive heat transfer...

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Bibliographic Details
Published in:IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) 1991-03, Vol.27 (2), p.2377-2380
Main Authors: Rowe, J.R., Hertel, J.A., Barclay, J.A., Cross, C.R., Trueblood, J.R., Hill, D.D.
Format: Article
Language:English
Subjects:
ALLOYS
CARNOT CYCLE
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COOLING
DATA
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ENERGY TRANSFER
EPOXIDES
EXPERIMENTAL DATA
FABRICATION
HEAT TRANSFER
Helium
HELMHOLTZ THEOREM
IMPREGNATION
INFORMATION
Lead
Magnetic flux
MAGNETIC REFRIGERATORS
Magnetic separation
MAGNETS
Niobium
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
Refrigeration
REFRIGERATORS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
Temperature
TESTING
THERMAL CONDUCTION
THERMODYNAMIC CYCLES 665412 > Superconducting Devices-- (1992-)
Tin
TIN ALLOYS
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Description
Summary:A Nb/sub 3/Sn magnet system for use in a magnetic refrigerator has been developed and tested. The system incorporates four asymmetric windings arranged as two Helmholtz pairs to produce two profiled field regions, required for a Carnot cycle. System components are cooled by conductive heat transfer to enable eventual operation in vacuum without liquid helium. Design features include low-resistance joints and superconducting interconnecting buses for low-ohmic losses in the persistent mode. The magnets are produced by the wind-and-react method on iron forms, followed by epoxy impregnation. The system requirements and design are described in further detail, and test results are presented.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.133696