CPC H01B 12/06 (2013.01) [H01B 13/0036 (2013.01)] | 13 Claims |
1. A billet for forming a textured-powder Bi-2212 wire, the billet comprising:
a billet core subassembly comprising a plurality of triangular-cross-section silver-clad TP bars, assembled in a contiguous axisymmetric array, inserted within an alloy-silver sheath tube and drawn to compact the triangular bars and the sheath tube;
a first plurality of silver-clad tetrahedral sections surrounding the billet core subassembly; and
powdered Bi-2212 disposed in each tetrahedral section, wherein each tetrahedral section of the first plurality of tetrahedral sections comprises a silver-clad TP bar that is wrapped in an alloy-silver wrap and further compacted to bond the wrap to the silver-clad TP bar.
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7. A cable-in-conduit conductor comprising:
a perforated inner tube;
a plurality of superconducting Bi-2212/Ag wires surrounding the perforated inner tube in two layers;
an outer sheath surrounding the plurality of superconducting wires,
wherein each superconducting wire of the plurality of super conducting wires comprises a plurality of tetrahedral sections surrounding a billet core subassembly.
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10. A method of fabricating a billet, the method comprising:
surrounding a billet core subassembly with a first plurality of tetrahedral silver-wrapped TP bars;
inserting the billet core subassembly and the first plurality of tetrahedral silver-wrapped TP bars into a first alloy-silver sheath tube; and
drawing the first sheath tube down to lock a registration of the first plurality of tetrahedral silver-wrapped TP bars.
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