The theory of the scattering-induced feeding-in in bent crystals
Abstract An analytical theory for the efficiency of scattering-induced transitions from a random to a channeled state (feed-in) in bent crystals is derived. The predictions from the theory are in good agreement with experiment and Monte Carlo simulations.
Channeling of high-energy particles in bent crystals – Experiments at the CERN SPS
Abstract During the latest decade, experiments have been performed at the CERN SPS to investigate the use of high-energy channeled nuclei in bent crystals for extraction, beam splitting and beam bending. An understanding of channeling in a bent crystal with extraction and deflection efficiencies for different energies, crystal types and ions has been developed. Furthermore, the long-standing question of radiation damage has been addressed with encouraging outcome. This makes extrapolations possible for the construction of, e.g., an extraction device for the LHC at CERN, RHIC at Brookhaven or new splitting elements in high-energy beams.We present the main results obtained and discuss existing and future applications of bent crystals in high-energy physics.
Planar dechanneling of GeV particles in a bent crystal
Abstract Planar dechanneling of GeV particles in a bent crystal has been analysed theoretically on the basis of a modified continuum model of dechanneling. Dechanneling probabilities have been calculated for low-index planes in bent Si and Ge crystals, and the efficiencies of the channeled steering of a GeV particle beam for typical bendings of crystals have been discussed.