Large scale fabrication of superconductors

Beginning with large quantity fabrication the fabrication steps of monolithical NbTi and Nb3sn solid diffusion conductors melting, copper cladding, billet assembling, extrusion, drawing, annealing, twisting and calibration are discussed regarding reproducibility and reliability of the physical properties over long length. An important point is the compatibility of the fabrication parameters with the physical properties optimization treatment. Large cross section high current density conductors and special conductors containing multiple materials for strengthening and reduction of losses fabricated by cabling and special techniques will be discussed.