Development of the collimators for beams with high energies and intensities

Great attention is paid to selection of materials for collimators and their structures. The analytical evaluations of the maximum possible intercepting intensity are given and the numerical calculation results are presented. The process of the beam losses localization is of impulse character and the limit for the material pulsed heating is noticeably lower than the stationary one, therefore the collimator instantaneous heating is also studied. The estimates of the collimator dimensions which are optimal in the context of absorption of the most part of the localized energy, are also presented. The effect of the beam dimensions on the absorber heating, depending on the point beam energy release distributions, is studied