Status of design and manufacture of the Upper Coils and Outer Poloidal Limiter Coils subsystems for the JET-EP magnetic diagnostic

This paper presents the status of the design and manufacture of the main in-vessel subsystems of the magnetic diagnostics enhancement project for JET. The subsystems are conceived as several sets of pick-up coils supported by mechanical structures attached to existing components of the first wall, to be installed by remote handling. The design constraints and fundamental choices at the base of the project are illustrated. The technological solutions proposed for the construction, presently in progress, are described.