Bi:2212/Ag-based Rutherford cables: production, processing and properties

The fabrication, critical current testing and AC loss measurement of Bi:2212/Ag-based Rutherford-type accelerator cables are described. Multifilamentary strands are used to form several cables with 18-19 strands and a lay pitch of 27.5 mm. Single-strand measurements of `poisoning' from several...

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Bibliographic Details
Published in:Superconductor science & technology 1999-02, Vol.12 (2), p.87-96
Main Authors: Collings, E W, Sumption, M D, Scanlan, R M, Dietderich, D R, Motowidlo, L R, Sokolowski, R S, Aoki, Y, Hasegawa, T
Format: Article
Language:English
Subjects:
Applied sciences
Electric connection. Cables. Wiring
Electrical engineering. Electrical power engineering
Electromagnets
Exact sciences and technology
Various equipment and components
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Summary:The fabrication, critical current testing and AC loss measurement of Bi:2212/Ag-based Rutherford-type accelerator cables are described. Multifilamentary strands are used to form several cables with 18-19 strands and a lay pitch of 27.5 mm. Single-strand measurements of `poisoning' from several candidate core materials as well as the influences of winding pitch and thermal shock degradation on I sub(c) are reported. In-cable single-strand studies indicated that winding damage could degrade edge measured I sub(c) by about 16%. Full cable I sub(c) measurements show that core-induced poisoning could reduce I sub(c) by a further 35-40%. AC loss measurements on a series of specially designed cables showed that the core effectively insulated the strands against crossover contact.
ISSN:0953-2048
1361-6668
DOI:10.1088/0953-2048/12/2/006