 This method is sometimes called single-turn injection.Multi-turn injection allows accumulation of many incoming trains of particles, for example if a large stored current is required.For particles such as protons where there is no significant beam damping, each injected pulse is placed onto a particular point in the stored beam transverse or longitudinal phase space, taking care not to eject previously-injected trains by using a careful arrangement of beam deflection and coherent oscillations in the stored beam.