Development of Bi-2212 round wires for high field magnet applications

Our latest progress on development of Bi-2212 round wire and insert coils is presented. We report on systematic investigations of the impact of wire drawing die angle and reduction per pass on the superconducting core density and J(c)/J(E) performance. Several processes have been demonstrated to increase the Bi-2212 core density in green wire, improve filament homogeneity in heat treated wire, and significantly enhance wire performance. The process condition and final performance of several high performance insert coils are discussed.