High-temperature superconducting magnets and coils from silver- sheathed Bi-2223 tapes

Conference · Fri Oct 01 04:00:00 EDT 1993

OSTI ID:10104552

Haldar, P; Hoehn, Jr, J G ^[1]; Motowidlo, L R ^[2]; Balachandran, U ^[3]

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1. Intermagnetics General Corp., Guilderland, NY (United States)
2. IGC/Advanced Superconductors, Inc., Waterbury, CT (United States)
3. Argonne National Lab., IL (United States)

Long lengths (30 to 100 m) of silver-sheathed Bi-2223 tapes with high current densities 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. The coils 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 measured to be 0.36 T at liquid nitrogen and 2.6 T at liquid helium temperatures. Progress in the prototype manufacturing of long lengths of HTS tape conductor is also discussed. 30 to 100 m lengths are now being made and 70 m lengths were measured to carry 23 Amps (J{sub c} {approximately} 15,000 A/cm{sup 2}) when immersed in liquid nitrogen.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10104552
• Report Number(s): ANL/ET/CP--81138; CONF-931009--14; ON: DE94002916
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207
665412
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
CURRENT DENSITY
FABRICATION
HIGH-TC SUPERCONDUCTORS
MATERIALS
STRONTIUM OXIDES
SUPERCONDUCTING COILS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS