Processing and characterization of Ag-clad Bi-2223 superconductors

Iyer, A. N.; Jammy, R.; Chudzik, M.; Lelovic, M.; Krishnaraj, P.; Eror, N. G.; Haldar, Pradeep

doi:10.1109/77.621032

Cited by 9 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In short samples, J c of 6.9×10 4 A cm −2 [3] and 7.3×10 4 A cm −2 [4] has been achieved in zero-field at 77 K. High-field applications rely on the use of high-performance tapes of kilometre lengths. In the Bi-2223 system, this level of performance is now being realized with J c of 1.2 × 10 4 A cm −2 reported over 1260 m [5], 1.8 × 10 4 A cm −2 over 250 m [6] and over 2 × 10 4 A cm −2 achieved in 1200 m [7], 1000 m [8] and 400 m [9] lengths at 77 K in self-fields. It is expected that J c will increase yet further, perhaps by an order of magnitude [10], as our understanding of tape processing improves.…”

Section: Introductionmentioning

confidence: 94%

“…PIT tape was used in this magnet. There is a continuing effort to improve processing of PIT tapes, in which precursor powders are packed into silver alloy tubes, drawn and pressed into a tape and processed in complex thermomechanical heat-treatment schedules [5,[34][35][36][37][38][39][40][41].…”

Section: Magnet Windingsmentioning

confidence: 99%

“…A record field of 24 T at 4.2 K [7] was achieved from a Bi-2223 insert in a 22.54 T background field, the same magnet producing 2.3 T at 4.2 K in a self-field. A magnet producing 3.2 T in a self-field and 1 T at 4.2 K in a background field of 20 T has been fabricated [5]. Inevitably the enormous effort producing large-scale Bi-2223 magnets and inserts has led to the proprietary use of materials and commercial knowledge.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design, fabrication and performance of a 1.29 T Bi-2223 magnet

Sneary

Friend²,

Hampshire

2001

Supercond. Sci. Technol.

View full text Add to dashboard Cite

The design and fabrication procedure of a laboratory-scale Bi-2223 tape superconducting magnet with a bore of 40 mm and a maximum field of 1.29 T at 4.2 K is presented. The magnet comprises six resin impregnated double-wound pancakes of bore diameter 40 mm fabricated via the react-and-wind route. Critical current density (J c ) measurements have been made as a function of magnetic field, angle and strain at 4.2 K and 77 K on short samples. In zero field, the critical current density for the superconducting cross-sectional area of the tape was 8.3 × 10 4 A cm −2 (4.2 K) and 1.18 × 10 4 A cm −2 (77 K). The electric field-current density characteristics of all the components of the coils when individually energized or with the whole magnet energized have been measured. Comparison between short sample measurements and performance of the magnet show that minimal additional damage occurred beyond the ∼20% that was produced by the bending strain during the wind-and-react fabrication procedure and the ∼10% variation of the long length J c of the tape. Sufficient detail is provided for the non-specialist to assess both the use of potential brittle superconducting tapes for magnet technology and to construct a laboratory-scale magnet.

show abstract