High-temperature superconducting magnets and coils from silver-sheathed Bi-2223 tapes
- Intermagnetics General Corp., Guilderland, NY (United States)
- IGC Advanced Superconductors, Inc., Waterbury, CT (United States)
- Argonne National Lab., IL (United States). Energy Technology Division
Long lengths (30 to 100 m) of silver-sheathed Bi-2223 tapes with high critical current density(J{sub c}) were fabricated by the conventional powder-in-tube technique and used to make compact and robust coils by the wind-and-react approach. The tapes were insulated, co-wound in parallel, and heat treated to produce a fused conductor of larger cross section in the form of pancake coils that were stacked in series to make test magnets. The coils and test magnets were characterized at liquid nitrogen (77 K) and liquid helium (4.2 K) temperatures. The highest field generated by the test magnets was 0.36 T at 77 K and 2.6 T at 4.2 K. Progress in the prototype manufacturing of long lengths of HTS tape conductor is also discussed. Lengths of 30 to 100 m are now being made, and 70 m lengths were observed to carry 23 A (J{sub c} {approx} 15,000 A/cm{sup 2}) when immersed in liquid nitrogen.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 43002
- Report Number(s):
- CONF-9310224--; ISBN 0-87339-271-X
- Country of Publication:
- United States
- Language:
- English
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