Innovations in the Design of Multifilamentary NbTi Superconducting Composites for the Supercollider and Other Applications
In recent work it has been shown that strand and cable, meeting the SSC specifications can be made on a production scale.
In addition, work has been carried out to develop finer filamentary materials with larger strand diameters and higher Jc’s, capable of operating at higher fields. Some of the problems encountered and the solutions developed are discussed in an effort to illustrate to the accelerator magnet designers the properties of conductors that may be available in the near future.
KeywordsStarch Manganese Brittleness Ductility Cold Work
Unable to display preview. Download preview PDF.
- 1.T.S. Kreilick, E. Gregory, D. Christopherson, G. Swenson and J. Wong, “Superconducting Wire and Cable for the Superconducting Supercollider”, Paper III- D-4, IISSC, New Orleans, LA, February 9–10, 1989.Google Scholar
- 2.R.M. Scanlan, J. Royet and R. Hannaford, “Fabrication of Rutherford-Type Superconducting Cables for Construction of Dipole Magnets”, Cryogenic Materials’88. eds. R.P. Reed, Z.S. Xing and E.W. Collings, Proc. ICMC Conf., Shenyang, China, 1, 391–399, 1988.Google Scholar
- 3.T.S. Kreilick, E. Gregory and J. Wong, “Fine Filamentary NbTi Superconducting Wires”, Adv. Crvo. Eng. Vol. 32, 739–745, eds. A.F. Clark and R.P. Reed,Plenum Press, 1986.Google Scholar
- 4.E.Gregory, “Conventional Superconducting Wire Technology”, invited paper for publication in a special issue of the Proc. IEEE in superconductor applications scheduled to appear in the Fall of 1989, guest ed. T. Van Duzer.Google Scholar
- 5.E. Gregory, T.S. Kreilick and J. Wong, “Fine Filamentary Materials for Accelerator Dipoles and Quadrupoles”, in Proc. ICFA Workshop, P. Dahl ed., Brookhaven National Laboratory Report BNL 52006 pp. 85–88, 1986.Google Scholar
- 7.T.S. Kreilick, E. Gregory, J. Wong, RM. Scanlan, A.K. Ghosh, W.B. Sampson and E.W. Collings, “Reduction of Coupling in Fine Filament Cu NbTi Composites by the Addition of Manganese to the Matrix”, Adv. Crvo. Eng. A.F. Clark and RP. Reed eds., Plenum Press, New York, 1988, vol. 34, pp. 895–900.Google Scholar
- 8.E. Gregory, T.S. Kreilick, J. Wong, E.W. Collings, K.R. Marken, Jr, R.M. Scanlan and C.E. Taylor, “A Conductor with Uncoupled 2.5 irni Diameter Filaments, designed for the Outer Cable of SSC Dipole Magnets”, presented at the Applied Superconductivity Conference, San Fransisco, CA, Paper M4–4, August 21–25, 1988.Google Scholar
- 9.T.S. Kreilick, F.S. von Goeler, E. Gregory and J. Wong, “Enhanced Current Carrying Capacity Multifilamentary Superconductors Through the Use of Cold Worked NbTi alloy”, presented at the Applied Superconductivity Conference, Paper MA-5, August 21–25, 1988.Google Scholar
- 13.R.M. Scanlan, J. Royet and C.E. Taylor, “Superconducting Materials for the SSC”,Adv. Crvo. Eng. Vol. 32, pp. 697–706, AF. Clark and RP. Reed, eds., Plenum Press, New York, 1986.Google Scholar
- 15.M.I. Buckett and D.C. Larbalestier, “Precipitation at Low Strains in Nb 46.5 wt% Ti”, IEEE Trans., MAG-23, Vol. 2, pp. 1638–1641.Google Scholar
- 16.E. Gregory, “Recent Advances in Commercial Multifilamentary NbTi Wires in the United States”, Cryogenic Materials’88, eds. R.P. Reed, Z.S. Xing and E.W. Collings, Proc. ICMC Conf., Shenyang, China 1, pp. 361–371, 1988.Google Scholar
- 17.D.C. Larbalestier, A.W. West, W. Starch, W. Warnes, P. Lee, W.R. McDonald, P. O’Larey, K. Hemachalam, B. Zeitlin, R. Scanlan and C. Taylor, “High Critical Current Densities and Industrial Scale Composites Made From High Homogeneity Nb 46.5 wt% Ti”, IEEE Trans., MAG-21, Vol. 2, pp. 269–272, 1985.CrossRefGoogle Scholar
- 21.H.C. Kanithi, L.R. Motovidlo, G.M. Ozeryansky, D.W. Hazelton and B.A. Zeitlin, “Low Loss and High Current Nb3Sn Conductors Made by the Internal Tin Method”, presented at the Applied Superconductivity Conference, San Francisco CA, Paper MJ-3, August, 1988.Google Scholar
- 22.R Perin, “Progress on the Superconducting Magnets for the Large Hadron Collider”, IEEE Trans., 24, 2, 734–740 (1988).Google Scholar
- 23.D. Ciazynski, J.L. Duchateau and B. Turek, “Conceptual Design of the Superconducting Cost System Cooled by Forced Flow He II for the Central Column of NET”, IEEE Trans., 24, 2, 1440–1443(1988).Google Scholar
- 24.E. Gregory, T.S. Kreilick, F.S. von Goeler and J. Wong, “Preliminary Results on Properties of Ductile Superconducting Alloys for Operation to 10 Tesla and Above”, ICEC 12. Southampton, U.K., eds. RG. Scurlock and CA. Bailey, Butteiworth, Guilford, Surrey U.K., pp. 874–877, 1988.Google Scholar
- 25.D.C. Larbalestier, A.D. Mclnturff, P.J. Lee, J.C. McKinnell, R. Remsbottom, W. Stirch, P.M. O’Larey, W.K. McDonald, H.C. Kanithi and B.A Zeitlin, “Development of High Current Density in NbTiTa Alloys”, presented at the Applied Superconductivity Conference, San Francisco CA, Paper MA-1, August, 1988.Google Scholar