Abstract

Results are presented concerning the superconducting properties of flat multifilamentary Nb3Sn conductors fabricated by the bronze route. We investigated degradation caused by winding the prereacted conductor on relatively small diameters, the influence of Zr and Ti doping of the Nb filaments and the anisotropic behaviour of critical current for the two principal orientations of the flat conductor with respect to the magnetic field. The performance of flat conductors in high field insert coils wound after the conductor has been heat treated (the R&W technique) is discussed.

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