Methods for Betatron or Synchrotron Beam Removal

Abstract

Two methods for bringing out a partially collimated electron beam from a betatron or synchrotron are discussed. Both of the methods become easier as the size of the accelerator is increased. One method makes use of a perturbing magnetic field to focus the electrons as they are made to leave the field of the accelerator by means of orbit expansion. The other method makes use of a pulsed deflecting system where the deflecting field is applied during a time short compared to the period of revolution of the electrons.