Performance of coils wound from long lengths of surface-coated, reacted, BSCCO-12212 conductor

React-before-wind surface-coated BSCCO-2212 is being established as a relatively low cost HTS conductor for practical applications. Quality tape is presently being manufactured in lengths of 450 to 500 m at a cost estimated to be 1/3 to 1/5 of the industry costs of BSCCO-2223 powder-in-tube tape. Robust, mechanically sound coils for applications ranging from NMR insert magnets to transformer windings are being made from this BSCCO-2212 tape. The coils have performed consistently through test and thermal cycling without degradation and operate as projected from short sample measurements. A hybrid approach, which uses mainly BSCCO-2212 augmented by BSCCO-2223 conductor in the high radial field end regions, is expected to halve the overall superconductor cost for magnet systems.