An injector for the proposed Berkeley Ultrafast X-Ray Light Source
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An injector for the proposed Berkeley Ultrafast X-Ray Light Source

  • Author(s): Lidia, Steven
  • Corlett, John
  • Pusina, Jan
  • Staples, John
  • Zholents, Alexander
  • et al.
Abstract

Berkeley Lab has proposed to build a recirculating linac based X-ray source for ultra-fast dynamic studies [1]. This machine requires a flat electron beam with a small verti calemittance and large x/y emittance ratio to allow for compression of spontaneous undulator emission of soft and hard x-ray pulses, and a low-emittance, round electron beam for coherent emission of soft x-rays via the FEL process based on cascaded harmonic generation [2]. We propose an injector system consisting of two high gradient high repetition rate photo cathode guns [3] (one for each application), a ~;120 MeV super conducting linear accelerator, a 3rd harmonic cavity for linearization of the longitudinal phase space, and a bunch compressor. We present details of the design and the results of particle tracking studies using several computer codes.

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