  New research in acceleration physics leads to growing up the power of charged
particles bunches. Existed methods based on interaction of detection devices
with bunches do not satisfy our need, because of the fact that new high
intensity bunches can damage this devices. Moreover, these methods do not allow
analyzing the bunches in real time. Recently new technique based on ODRI
(optical diffraction radiation interference) by a bunch at its propagation
through the slit was proposed. In this work the results of theoretical
simulations on diffraction radiation, in particular ODRI, by electrons for
various slit systems as well as the comparison with the DESY experimental data
are presented.
