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Progress on Mono Element Internal Tin superconductor is presented for four designs with two incorporating integral Nb barriers as opposed to NbTa barriers added later in the fabrication. Processing information is also presented covering the fabrication of these conductors. Sample testing techniques are discussed that gave stable reproducible results to 10 T at current densities of 3767 A/mm 2 (noncopper). Current density as a function of magnetic field from 10 to 17 T is measured and analyzed with respect to heat treatment and configuration. A value of 2700 A/mm 2 in the noncopper at 12 T was achieved in the best though nonoptimized samples. Kramer plots are also presented that show of up to 26 T. Reported " " values are 33 at 17 T for the highest current density sample.

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