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Title: Development of Multi-Filament Textured-Powder Bi-2212/Ag Wire With Enhanced Local Area Ratio

Journal Article · · IEEE Transactions on Applied Superconductivity
ORCiD logo [1];  [2];  [1]; ORCiD logo [3]; ORCiD logo [1];  [4]
  1. Texas A & M Univ., College Station, TX (United States)
  2. Accelerator Technology Corp, College Station, TX (United States)
  3. Texas A & M Univ., College Station, TX (United States); Accelerator Technology Corp, College Station, TX (United States)
  4. Commonweath Fusion Systems, Boston, MA (United States)
+ Show Author Affiliations

The performance and cost of Bi-2212/Ag wire is limited by the large fraction of Ag matrix (~3:1) that is required in the oxide-powder-in-tube fabrication process. An alternative fabrication process is being developed in which fine-powder Bi-2212 is uniaxially compressed to form bars with a thin Ag foil sheath. The fine powder naturally textures (aligns the a-b planes perpendicular to the direction of compaction) with texture >80% using 200 MPa compression. A billet is formed by stacking trapezoidal- cross-section bars in a symmetric 8-12-16 pattern around an Ag rod and enclosed in an Ag-wall extrusion can. Here, the billet is extruded and drawn to fine wire. Results are presented on present status of the development and testing.

Research Organization:
Accelerator Technology Corp., College Station, TX (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0020716
OSTI ID:
1847603
Report Number(s):
DOE-ATC-20716; TRN: US2303096
Journal Information:
IEEE Transactions on Applied Superconductivity, Vol. 31, Issue 5; Conference: International Cryogenic Materials Conference; ISSN 1051-8223
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English

References (7)

Tripled critical current in racetrack coils made of Bi-2212 Rutherford cables with overpressure processing and leakage control journal September 2018
Instrumental aspects in X-ray diffraction on polycrystalline materials journal December 2005
Textured-Powder BI-2212 Ag Wire Technology Development text January 2015
Understanding the densification process of Bi 2 Sr 2 CaCu 2 O x round wires with overpressure processing and its effect on critical current density journal August 2016
Bi-2212 round wire development for high field applications journal May 2014
High-Performance Bi-2212 Round Wires Made With Recent Powders journal August 2019
Cable-in-Conduit Dipoles to Enable a Future Hadron Collider journal June 2017

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43 PARTICLE ACCELERATORS
36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
17 WIND ENERGY
Bi-2212
high-field magnets
superconducting wire
multifilamentary superconductors