PS Continuous Transfer Pedestal Kicker

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The purpose of the Proton Synchrotron Continuous Transfer ejection is to provide the Super Protron Synchrotron with a continuous beam of quasi constant intensity and with a duration of five PS turns.
The unbunched PS proton beam is kicked with a combination of Pedestal and Staircase magnets onto an electrostatic septum magnet, which slices the beam. The proportion of the beam sliced by the septum is ejected, while the non-sliced proportion is kicked again to undo the initial kick before the beam hits the septum once more. The beam performs a horizontal and screwlike betatron oscillation of 6.25 turns/PS turn. Thus the truncated beam cross-section has effectively rotated by 90° every time it hits the septum.
The kick waveform required resembles a Staircase. For technical purposes this kick is decomposed into a long, flat pedestal and a staircase. By judicious choice of the level of each staircase step a quasi constant intensity is obtained.

For comments and changes send e-mail to K.D. Metzmacher
Copyright CERN -- last modified 04/07/03