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inverse-free-electron-laser

Paper Title Other Keywords Page
THPMS032 Plasma Wakefield Acceleration Experiments using Two Subpicosecond Electron Bunches plasma, electron, acceleration, target 3073
 
  • P. Muggli
  • E. K. Kallos, T. C. Katsouleas
    USC, Los Angeles, California
  • W. D. Kimura
    STI, Washington
  • K. Kusche, P. I. Pavlishin, D. Stolyarov, V. Yakimenko
    BNL, Upton, Long Island, New York
  Funding: This work is supported by US DoE under contracts DE-FG02-92-ER40745 and DE-FG02-04ER41294.

Two ~100 fs electron bunches, separated in energy by approximately 1.8 MeV and in time by 0.5-1 ps, were sent through a capillary discharge plasma. The plasma density was varied from ~1·1014/cc to ~1·1017/cc. A 2-D PWFA model indicates the net wakefield produced by the bunches will depend on their relative charge, temporal separation, and the plasma density. This will affect the amount of energy gain or loss of the second bunch. During measurements of the energy spectrum of the second bunch, we observed a difference in the amount of gain or loss depending on the plasma density, which is consistent with the model prediction.