Comparison of Nb3Sn and NbTi superconductor magnet ITER devices

J. D. Galambos, Y. K. Peng, R. L. Reid, M. S. Lubell, L. Dresner, J. R. Miller

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

The TETRA tokamak systems code is used to compare designs for the International Thermonuclear Experimental Reactor (ITER) that use Nb3Sn and NbTi superconductor magnets. Similar minimum-cost devices are found with both types of conductors when superfluid helium (He-II) is used in conjunction with the NbTi. The cost of using NbTi with He-I cooling is much higher than that of using Nb3Sn or NbTi with He-II cooling. Generally, the minimum-cost devices occur for peak fields at the toroidal field coil of about 11.5-13 T, depending on the physics requirements. Sensitivities to the allowable stress level indicate strong cost increases when the stress is reduced from the nominal 600-MPa level and weaker cost benefits when the stress is allowed to reach higher levels.

Original languageEnglish
Pages (from-to)1046-1050
Number of pages5
JournalFusion Technology
Volume15
Issue number2 pt 2B
DOIs
StatePublished - 1989
EventProceedings of the Eighth Topical Meeting on the Technology of Fusion Energy - Salt Lake City, UT, USA
Duration: Oct 9 1988Oct 13 1988

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