Formation of a high-energy particle beam by means of focusing crystal devices

It becomes difficult and expensive to control TeV-particle trajectories using electromagnets to obtain extracted beams at accelerators. For these purposes, high-gradient devices based on bent crystals are more suitable. These crystals can serve as superstrong lenses with a focal length of less than 1 m with an equivalent magnetic field of 1000 T. In this work, a scheme based on two successive focusing crystals has been implemented to form a 50 GeV axially symmetric beam with a small divergence of 30 $\mu$rad in both the horizontal and vertical planes. One of the promising applications of this scheme is the creation of high-energy neutrino beams.