Problems of shaping the circulating beam spilled on the synchrotron internal crystalline targets

The methods of shaping the circulating beam for guiding onto thin targets ensuring single particle passage and small angular spreads are considered. It is shown that the most perspective method for the purposes under consideration is a method of resonant swing of an accelerated beam traditionally used for slow extraction of initial particles. The advantage of this method is high reliability of single particle passage and local behaviour that in comparison with HF dump predetermines the possibility of both the reuse of particles, which have not interacted with the target, and solution of the problems of their monitoring