Processing and properties of long-lengths of Ag-clad BSCCO superconductors and high-{Tc} magnets

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Long lengths of Ag-clad mono and multicore BSCCO tapes were fabricated by the powder-in-tube technique. The critical current density (J{sub c}) of 125-m-long monocore tapes was {approx}12,000 A/cm{sup 2} (critical current, I{sub c} 20 A) at 77 K. A 230-m-long 37-filament tape carried an I{sub c} of 14 A (corresponding to a J{sub c} of {approx}10,000 A/cm{sup 2}). Pancake-shaped coils were formed from long-length conductors by the wind-and-react approach. High-T{sub c} magnets were then assembled by stacking the pancake coils and connecting them in series. The magnets were tested as a function of applied magnetic fields at 4.2, 27, 64, ... continued below

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9 p.

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Balachandran, U.; Iyer, A.N.; Jammy, R.; Haldar, P.; Hoehn, J.G. Jr. & Suenaga, M. October 1, 1994.

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Description

Long lengths of Ag-clad mono and multicore BSCCO tapes were fabricated by the powder-in-tube technique. The critical current density (J{sub c}) of 125-m-long monocore tapes was {approx}12,000 A/cm{sup 2} (critical current, I{sub c} 20 A) at 77 K. A 230-m-long 37-filament tape carried an I{sub c} of 14 A (corresponding to a J{sub c} of {approx}10,000 A/cm{sup 2}). Pancake-shaped coils were formed from long-length conductors by the wind-and-react approach. High-T{sub c} magnets were then assembled by stacking the pancake coils and connecting them in series. The magnets were tested as a function of applied magnetic fields at 4.2, 27, 64, and 77 K. A magnet containing 480 m of high-{Tc} tape generated a record-high field of 2.6 T at 4.2 K. Another magnet assembled with {approx}770 m of tape generated a field of {approx}1 T at 4.2 K and {approx}0.6 T at 27 K, both in an applied background field of {approx}20 T. Strain tolerance of high-{Tc} tapes was evaluated by measuring J{sub c} retention as a function of applied strain in an 0.5 T applied field at 77 K.

Physical Description

9 p.

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INIS; OSTI as DE95005855

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  • 7. international symposium on superconductivity, Kita Kiyushu (Japan), 8-11 Nov 1994

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  • Other: DE95005855
  • Report No.: ANL/ET/CP--83565
  • Report No.: CONF-941176--3
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/34395 | External Link
  • Office of Scientific & Technical Information Report Number: 34395
  • Archival Resource Key: ark:/67531/metadc685898

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  • October 1, 1994

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 16, 2015, 5:36 p.m.

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Balachandran, U.; Iyer, A.N.; Jammy, R.; Haldar, P.; Hoehn, J.G. Jr. & Suenaga, M. Processing and properties of long-lengths of Ag-clad BSCCO superconductors and high-{Tc} magnets, report, October 1, 1994; Illinois. (digital.library.unt.edu/ark:/67531/metadc685898/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.