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Method and structure for compensating for variations in vapor cooled lead resistance of superconducting magnets

Patent ·
OSTI ID:6664298
A superconducting magnet arrangement is disclosed having a sealed cryogenic environment utilizing liquid helium, a superconducting coil immersed in the liquid helium, a constant current power supply exterior of the cryogenic environment and connected to the coil by leads cooled by varying helium boil off and an electrical shunt connect across the magnet. Variations in the helium boil off are compensated by exposing the shunt to and cooling it by the same helium boil off or by exposing negative temperature coefficient device to such flow or by a combination of such methods.
Assignee:
General Dynamics Corp
Patent Number(s):
US 4348710
OSTI ID:
6664298
Country of Publication:
United States
Language:
English

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Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COOLING
CRYOGENIC FLUIDS
CRYOGENICS
DESIGN
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTROMAGNETS
ELEMENTS
EQUIPMENT
FLUIDS
GASES
HELIUM
MAGNETS
NONMETALS
PHYSICAL PROPERTIES
RARE GASES
SEALS
SUPERCONDUCTING COILS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS