Nanotubes for particle channeling, radiation and electron sources

The main involvements of the INFN-LNF group in channeling researches are described, i.e. channeling of high energy beams in nanotubes (with the synthesis and characterization of the ordered nanotube samples), crystal extraction and collimation at IHEP (with the design and production of the bent crystals), crystal undulator R&D (with the characterization of the crystal undulator prototypes with SEM and the positron beam). We consider a precise determination of the optimal experimental conditions for channeling of accelerated particles (protons, positrons, photons, neutrons) through micro and nanostructured crystals and films of aligned nanotubes, as promising candidates for producing highly focused beams.