Acceleration of polarised protons to high energies in synchrotrons

The problem of accelerating polarised protons to high energies in synchrotrons is considered. The Siberian snake method is applied to preserve beam polarisation during acceleration in synchrotrons. The practical application of this method is considered. An estimate is obtained of the number of snakes required in an accelerator for preserving beam polarisation. The influence of the Siberian snakes on beam dynamics is analysed. The suggested method of calculating practical snake schemes allows one to obtain appropriate snake configurations with conventional or helical dipoles for a particular accelerator.