Testing the X-rays production from crystal undulators at positron facilities

The main involvements of the INFN-Laboratori Nazionali di Frascati group in channeling researches are described, i.e. channeling of high energy beams in nanotubes (with the synthesis and characterization of ordered nanotube samples), crystal extraction and collimation at IHEP (with the design and production of bent crystals), crystal undulator R & D (with the characterization of crystal undulator prototypes with SEM and the positron beam).