Angular distributions of bent-crystal deflected protons

Penetration of relativistic protons into bent crystals at small angles with respect to the bent crystallographic planes has been evaluated within continuous potential approximation. Namely, in this paper the numerical solution of the equation of motion for channeled and quasi-channeled relativistic protons is presented. Proton trajectories under the conditions of both channeling and volume reflection were simulated. The angular distributions of outgoing beam protons are calculated with the parameters of recent CERN experiments. The rather good agreement with experimental data is achieved.