A large-area bent crystal shield for deflection of high-energy ions

Abstract

A large-area bent crystal shield which is capable of deflecting high-energy ions of all atomic numbers is described. Its effect on the transmitted angular distribution of high-energy ions is characterized using Monte Carlo channeling simulations. Ions up to an energy limit set by the bent crystal curvature radius are deflected by the full bend angle. A shield with a surface area of 1×1 cm2 which is capable of deflecting ions with energies up to 100 GeV /nucleon has been fabricated in which the lattice planes across the entrance surface are uniformly aligned. © 2007 American Institute of Physics.