Velocity Bunching in Photo-Injectors

  title={Velocity Bunching in Photo-Injectors},
  author={Luca Serafini and Massimo Ferrario},
Abstract. We describe here a new method to increase the peak current of high brightness electron beams as those required to drive X-ray SASE FEL's, that is based on a rectilinear compressor scheme utilizing the bunching properties of slow waves. It is shown that whenever a beam, slower than the synchronous velocity, is injected into a RF wave at the zero acceleration phase and slips back in phase up to the peak acceleration phase, it can be compressed as far as the extraction happens at the… CONTINUE READING


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