DocumentCode
1206532
Title
Demountable coaxial gas-cooled current leads for MRI superconducting magnets
Author
Zhang, C.J. ; Zhou, X.T. ; Yan, L.
Author_Institution
China Kejian Corp. Ltd., China
Volume
28
Issue
1
fYear
1992
fDate
1/1/1992 12:00:00 AM
Firstpage
957
Lastpage
959
Abstract
To fabricate a demountable current lead for MRI (magnetic resonance imaging) superconducting magnets with less heat loss, the heat transfer equation of a gas-cooled current lead is introduced. The authors discuss the character of demountable coaxial gas-cooled current leads and make careful selection of lead materials. Leads of 250 A for MRI magnets were made and tested. It is concluded that these current leads are adaptable to all kinds of closed-loop superconducting magnets and very convenient to use. The lead is safe to use even when there is no helium gas glow in it
Keywords
coaxial cables; heat transfer; low-temperature techniques; nuclear magnetic resonance spectroscopy; power cables; superconducting magnets; 250 A; MRI superconducting magnets; closed-loop superconducting magnets; coaxial gas-cooled current leads; demountable current lead; heat loss; heat transfer equation; Coaxial components; Conductors; Cooling; Equations; Heat transfer; Helium; Magnetic resonance imaging; Resistance heating; Superconducting magnets; Thermal conductivity;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.120038
Filename
120038
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