Electron beam characterizations with optical diffraction radiation from circular aperture and rectangular slit

Diffraction radiation (DR) is one of the most promising candidates for electron beam diagnostics for the high-energy accelerator facilities due to non-intercepting, multi-parameter and real-time capabilities. In this paper we investigated the possibility of using DR from circular aperture target to characterize electron beam parameters. The method to separate beam’s divergence and beam size with two wavelengths components is discussed. A new method suitable for small beam size determination with DR from rectangular slit by scanning the slit in transverse direction is proposed.