Work in the U.K. on Filamentary A15 Conductor Development

  • J. A. Lee
  • C. A. Scott
Part of the Cryogenic Materials Series book series (CRYMS)


In the U.K. substantial work on Nb3Sn conductor development began at Harwell in 1967, with a Department of Industry (DoI) funded programme to establish the technical and economic basis for the industrial production of Nb3Sn tapes produced by the surface-diffusion (liquid reaction) route. Work on intrinsically stable filamentary Nb3Sn composites, financed by the United Kingdom Atomic Energy Administration (UKAEA), began in 1969 with work on the tin-bronze/niobium composites. Other matrix materials, for example silver, were also examined. The work developed in close collaboration with the Rutherford; Laboratory, with the emphasis on conductors suitable for pulsed field use in accelerators. By 1974 the Rutherford Laboratory had built a successful series of small magnets, using conductors incorporating high purity copper regions protected by diffusion barriers, both tantalum and phosphorus-poisoned niobium, and had established the principles of the wind-react technique for magnet construction.1,2 In collaboration with a commercial bronze founder, C. C. Clifford, Birmingham, the production of 13.5 wt% Sn bronzes on a tonnage scale by continuous casting had also been established.


Continuous Casting Tonnage Scale Casting Furnace Conductor Development Residual Phosphorus Content 
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  1. 1.
    D. C. Larbalestier, V. W. Edwards, J. A. Lee, C. A. Scott, and M. N. Wilson, IEEE Trans, on Magn. MAG-11: 247 (1975).Google Scholar
  2. 2.
    D. C. Larbalestier, P. E. Madsen, J. A. Lee, M. N. Wilson, and J. P. Charlesworth, IEEE Trans. Magn. MAG-11: 555 (1975).Google Scholar
  3. 3.
    R. Q. Apsey, D. E. Baynham, and C. A. Scott, 6th Int. Conf. Magnet Tech. Bratislava MT-6: 546 (1977).Google Scholar
  4. 4.
    F. J. Brown, D. Phillips, F. D. Thornton, Proc. 7th Int. Cryo. Eng. Conf. ICEC-7: 81 (1978).Google Scholar
  5. 5.
    P. McDonald and W. Proctor, Proc. 8th Int. Cryo. Eng. Conf. ICEC-8, to be published.Google Scholar
  6. 6.
    I. L. McDougall, Proc. 5th Int. Conf. Magnet Tech. MT-5: 710 (1975).Google Scholar
  7. 7.
    M. N. Wilson, Computer Simulation of the Quenching of a Superconducting Magnet, RHEL/M151, Rutherford Laboratory, Oxfordshire, U.K. (1968).Google Scholar
  8. 8.
    P. F. Smith, Rev. Sei. Instr. 34; 368 (1963).CrossRefGoogle Scholar
  9. 9.
    M. N. Wilson, Proc. 5th Int. Conf. Magnet Tech. MT-5: 615 (1975).Google Scholar
  10. 10.
    M. N. Wilson, Superconducting Magnets, Oxford University Press, to be published.Google Scholar
  11. 11.
    P. E. Madsen, J. A. Lee and D. Armstrong, Brit. Patent 1499507; J. A. Lee, P. E. Madsen, and R. F. Hills, Brit. Patent 11708/76.Google Scholar
  12. 12.
    D. B. Smathers and D. C. Larbalestier, Int. Cryo Mat. Conf., Madison, WI (1979), to be published.Google Scholar
  13. 13.
    J. A. Lee, C. F. Old, and D. C. Larbalestier, Collogues Int. CNRS 42: 87 (1974).Google Scholar
  14. 14.
    T. Luhman and M. Suenaga, Appl. Phys. Letters 27: 61 (1976).CrossRefGoogle Scholar
  15. 15.
    P. Styles, I. D. Campbell, D. I. Hoult, R. Porteous, R. E. Richards, and N. F. Soffe, Proc. 4th European Experimental NMR Conf. (EENC), Grenoble/Autrans (1979), to be published.Google Scholar
  16. 16.
    D. Phillips, Thor Cryogenics, private communication.Google Scholar
  17. 17.
    J. P. Charlesworth and P. T. Sikora, IEEE Trans. Magn. MAG-15: 260 (1979).Google Scholar
  18. 18.
    J. R. Clem, J. Appl. Phys. 50: 3518 (1979).CrossRefGoogle Scholar
  19. 19.
    R. Rawlings and C. Pitt, private communication.Google Scholar
  20. 20.
    J. D. Elen, C.A.M. van Beijnen, and C.A.M. van der Klein, IEEE Trans, on Magnetics MAG-13, 470 (1977).Google Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • J. A. Lee
    • 1
  • C. A. Scott
    • 2
  1. 1.Chemistry DivisionAERE HarwellDidcotUK
  2. 2.Rutherford LaboratoryChilton DidcotUK

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