NDLI: Dependence of contact condition between strands on twist pitch in CIC conductor

Content Provider	IEEE Xplore Digital Library
Author	Tsuda, M. Nakamura, S. Katsuda, S. Harada, N. Hamajima, T. Takahata, K.
Copyright Year	2002
Abstract	We fabricated a model conductor using copper wire and measured the contact length by a pressure-sensitive paper, which changes color according with pressure. The contact length increased during the compression process of the model conductor due to strand displacement. The strand displacement and increase in contact length strongly depended on twist pitch in the sub-cable, strand tension in twisting process and compression method. Therefore, we fabricated four types of (3 /spl times/ 3) conductors with different combinations of twist pitches in the first and second order sub-cables to investigate the relationship between twist pitch and contact length. Smaller twist pitch in the first order sub-cable is more effective in reducing contact length. Twist pitch in the second order sub-cable did not have a strong influence on the contact length. The strand displacement in the first order sub-cable was more closely related to the twist pitch in the first order sub-cable than that of the second order sub-cable. These results imply that the smaller twist pitch in the first order sub-cable could reduce irregular coupling loss with long time constant more effectively.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1533
Ending Page	1536
Page Count	4
File Size	687088
File Format	PDF
ISSN	10518223
Volume Number	15
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-01
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 Copper Wire Contact resistance Fabrication Superconducting coils Length measurement Pressure measurement Samarium Geometry twist pitch CIC conductor contact length coupling losses
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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