Abstract
Silver sheathed Tl-1223 tapes were prepared by a powder-in-tube process. The critical current density of short samples was 18 kA/cm2 at 77 K. Longer tapes up to 1.2 m, prepared by sequential pressing, had a critical current density of 12 kA/cm2. From these tapes we have wound two coils. A solenoid coil with 5 windings was made of 8 tapes with a total length of 4.5 m. At 77 K the critical current of the coil was 23 A in the self generated magnetic field (18 Gauss at the centre of the coil). Using an iron yoke the critical current remained at 22 A while the generated magnetic field increased to 120 Gauss. A pancake coil with 15 windings, made of 5 tapes with a total length of 5 m, generated a magnetic field of 149 Gauss at the critical current of 12 A. From measurements of the critical current density of our tapes in applied magnetic fields, we conclude that coils made of Tl-1223 tapes can be used to generate higher magnetic fields at 77 K.
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REFERENCES
K. Ohkura, K. Sato, M. Ueyama, J. Fujikami, Appl. Phys. Lett. 67, 1923 (1995).
K. Fukushima, M. Okada, K. Tanaka, H. Kitaguchi, H. Kumakura, K. Togano, T. Kiyoshi, K. Inoue, Physica C 268, 334 (1996).
L. Bigoni, L. Martini, E. Varesi, E. Zampiceni, S. Zanella, A. Baldini, R. Garrè, G. Cartegni, D. De Tommaso, L. Rossi, “Development of Bi-2223/Ag Tapes and Coils”, presented at ASC, Pittsburgh 1996.
K. Funaki, M. Iwakuma, M. Takeo, K. Yamafuji, M. Konno, Y. Kasagawa, I. Itoh, S. Nose, M. Ueyama, K. Hayashi, K. Sato, “Electomagnetic Properties in Parallel Conductors Composed of Bi-2223 Multifilamentary Wires for Power Transformer Windings”, presented at ASC, Pittsburgh 1996.
D.I. Driscoll, R.F. Schiferl, B.X. Zhang, B.A. Shoykhet, A.A. Meyer, J.K. Zevcheck, E.B. Johnson, “Construction and Testing of an Air-Core Synchronous Motor with High Temperature Superconducting Field Winding”, presented at ASC, Pittsburgh 1996.
J.P. Voccio, C.P. Prum, B.B. Gamble, “125 HP HTS Motor Field Winding Development”, presented at ASC, Pittsburgh 1996.
M.A. Daugherty, J.Y. Coulter, W.L. Hults, D.E. Daney, D.D. Hill, D.E. McMurry, M.C. Martinez, L.G. Phillips, J.O. Willis, H.J. Boenig, F.C. Prenger, A.J. Rodenbusch, S. Young, “HTS High Gradient Magnetic Separation System”, presented at ASC, Pittsburgh 1996.
V. Selvamanickam, T. Finkle, K. Pfaffenbach, P. Haldar, E.J. Peterson, K.V. Salazaar, E.P. Roth, J.E. Tkaczyk, Physica C 260, 313 (1996).
G. Brandstätter, Ph.D. Thesis, University of Wien, Austria, 1995.
Z.F. Ren, J.H. Wang, Appl. Phys. Lett. 61, 1715 (1992).
V. Selvamanickam, K. Pfaffenbach, D. Kirchhoff, M. Gardner, D.W. Hazelton, P. Haldar, “Development of Tl-1223 and Y-123 Conductors for 77 K HTS Applications”, presented at ASC, Pittsburgh 1996.
Z.F. Ren, C.A. Wang, J.H. Wang, D.J. Miller, K.C. Goretta, Physica C 247, 163 (1995).
H. Jones, R.G. Jenkins, R.M. Goodall, C. Macleod, A.A. El Abbar, A.M. Campbell, “High Temperature Superconducting Magnets with Active Control for Attraction Levitation Transport Applications”, presented at ASC, Pittsburgh 1996.
F.A. List, D.M. Kroeger, V. Selvamanickam, Physica C 275, 220 (1997).
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Riepl, T., Zachmayer, S., Löw, R. et al. Test Coils Made of Tl-1223 Tapes. Journal of Superconductivity 11, 67–70 (1998). https://doi.org/10.1023/A:1022633929602
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DOI: https://doi.org/10.1023/A:1022633929602