NDLI: Conceptual design of a hollow cable conductor for the large coil program

Content Provider	IEEE Xplore Digital Library
Author	Chi, J.
Copyright Year	1965
Abstract	A conceptual design of a cryostabilized conductor was developed for the Large Coil Program (LCP) that met all of the stringent design requirements and constraints. The reference conductor was selected following parametric analyses involving the number of strands, the helium (void) fraction and the copper to noncopper ratio. The number of strands considered took into account the type of cabling operations that are possible and the need to provide complete transposition of the strands to minimize ac losses. The helium (void) fraction affects the pressure drop and helium pump work required, while the copper to non-copper ratio affects the helium flowrate required to meet the stability criterion. The reference conductor selected consisted of 567 strands of multi-filamentary superconductors with a copper to non-copper ratio of 1.92. The stability of the reference conductor selected was verified by transient recovery analyses using the TAP-B code. There are a number of uncertainties that affect the stability of the conductor. They include the heat transfer and helium flow phenomena within the interstices of the twisted strands. These uncertainties as well as the heat transfer and friction factor correlations used in the design and the various assumptions made are discussed in the paper. Areas where additional work are needed are recommended.
Sponsorship	IEEE Magnetics Society
Starting Page	337
Ending Page	339
Page Count	3
File Size	340323
File Format	PDF
ISSN	00189464
Volume Number	15
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1979-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Conductors Coils Copper Transient analysis Uncertainty Heat transfer Stability criteria Superconductivity Stability analysis
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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