BEAM SIZE MEASUREMENT EXISTING ADVANCED METHODS

A method of an optical diffraction radiation technique based on the phase shift on the slit target, consisting on the two semi-planes which are turned at a some angle one to other is suggested. The method of suppression of the pre-wave zone effect contribution is shown. This allows to realize the non-invasive measurements of transverse size of supper-relativistic electron beams with the small emittance for the single bunch diagnostics. Last time a few techniques for measuring an electron beam size as small as 10 μ with resolution of 1 μ are being developed at the accelerator installations with different beam energies. However, a simple noninvasive method for beam-size measurement with a single shot is still absent