Possibility of crystal extraction and collimation in the sub-GeV range

Bent crystal situated in a circulating beam can serve for efficient slow extraction or active collimation of the beams. This technique, well established at 1–1000 GeV, could be efficient also at the energies as low as 0.1–1 GeV according to the computer simulations presented in this paper. Applications might include halo scraping in the spallation neutron sources or slow extraction from medical synchrotrons