Key differences in material requirement and technology for large electromagnetic shields, with respect to other large-scale applications of high-T _c superconductors

Summary

The main specifications for the use of high-T _c superconductors in the realization of extended surfaces to be used for the fabrication of electromagnetic shields are illustrated. In particular, the differences are stressed between the specifications required by this application and those required by other large-scale applications, namely electrotechnical machinery and magnetic levitation. From these premises, the approach to the fabrication technology of shields is briefly discussed, which also shows important differences with respect to other applications. The analysis is supported by examples of the solutions which are being developed and adopted in the world and in Torino.