Performance evolution of Nb/sub 3/Sn cable-in-conduit conductors under cyclic load [for Tokamaks]

Two subsize, Nb/sub 3/Sn cable-in-conduit conductors, are tested as short samples in the SULTAN test facility. Transverse load is applied by sweeping up and down the operating current in high background field. A serious performance loss of I/sub c/ and n-factor is observed upon cyclic load, with a d...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2002-03, Vol.12 (1), p.516-519
Main Authors: Bruzzone, P., Fuchs, A.M., Stepanov, B., Vecsey, G.
Format: Article
Language:English
Subjects:
Coils
Conductors
Critical current
Niobium
Plasma temperature
Power cables
Sensor arrays
Superconducting magnets
Testing
Tin
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Description
Summary:Two subsize, Nb/sub 3/Sn cable-in-conduit conductors, are tested as short samples in the SULTAN test facility. Transverse load is applied by sweeping up and down the operating current in high background field. A serious performance loss of I/sub c/ and n-factor is observed upon cyclic load, with a drop of the critical current, I/sub c/, larger than 30%. The results are critically discussed and compared to similar findings from the literature. The impact of the cyclic load on the Nb/sub 3/Sn CICC performance must be carefully evaluated in the magnet design.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2002.1018456