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Microbunching and beam break-up in DUV-FEL accelerator
2003 / IEEE / 0-7803-7738-9
This item was taken from the IEEE Conference ' Microbunching and beam break-up in DUV-FEL accelerator ' We present the results of electron beam longitudinal modulation studies in the DUV-FEL accelerator. For bunch length determination we used the ""zero-phasing"" method, based on a measurement of the chirped electron bunch energy spectra. The measurements revealed a spiky structure in the longitudinal phase space. A model based on space charge effect is considered to explain of the obtained phenomena. The analysis of the energy spectra has shown a sensitivity of the structure to the electron beam peak current, energy and longitudinal non-uniformity of the RF gun drive laser. Analytical calculations have demonstrated a qualitative agreement with experimental observations. Several experiments have been made to compare with theory; measured results are reviewed in this paper. The obtained effect is briefly discussed in relation to high brightness accelerators.
Chirped Electron Bunch Energy Spectra
Space Charge Effect
Electron Beam Peak Current
Rf Gun Drive Laser
High Brightness Accelerators
Particle Beam Diagnostics
Particle Beam Bunching
Free Electron Lasers
Particle Beam Stability
Electron Beam Longitudinal Modulation