  Ideas of use the particle channeling in bent crystals for steer the beams
have been checked up and advanced in many experiments. However, until now, this
method of beam formation has limitations in application, since the channeling
process involves beam particles with low angular divergence, limited by the
angle of Lindhard. Here we test at the U-70 accelerator two crystal devices,
the focusing crystal and multistrip crystal, which expand the boundaries of
application of bent crystals at accelerators.
