Comparison of two ICCS conductors for MHD application
Two subscale internally cooled, cabled superconductors have been examined as candidates for use in a retrofit MHD topping cycle magnet. One of these was a 3 x 3 x 3 cable in which all the strands were multifilamentary NbTi stabilized with copper. The other was a 3 x 3 x 3 cable in which two strands in each of the nine triplets was OFHC copper and one was multifilamentary NbTi. The overall copper-to-superconductor ratio for each of the two 27-strand cables was approximately the same. The two conductors were cowound onto a grooved mandrel in such a way that they could be tested alternately. Each sample was instrumented with a heater at the center of the conductor length, and with a pressure transducer, four pairs of voltage tape and one iron-doped gold/constantan thermocouple. Performance tests of the conductors were made at 6, 7 and 7.8 tesla background magnetic fields and at heater input energies ranging from 60 mJ/cm/sup 3/ to 1758 mJ/cm/sup 3/ of conductor. The results of these tests and their significance for MHD magnet design and economics are discussed.
- Research Organization:
- 9510048
- OSTI ID:
- 6042471
- Report Number(s):
- CONF-880812-
- Journal Information:
- IEEE Trans. Magn.; (United States), Vol. 25:2; Conference: Applied superconductivity conference, San Francisco, CA, USA, 21 Aug 1988
- Country of Publication:
- United States
- Language:
- English
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