(Color online) Normalized longitudinal profile of the radiation power along the electron-beam coordinate as it evolves along the undulator with coordinate . (GENESIS simulation with the parameters listed in Table I.)
Profile of the radiation pulse in the super-radiant regime vs the longitudinal electron-beam coordinate .
Longitudinal electron phase space at four different locations along the radiation pulse, corresponding to the positions A, B, C, and D in Fig. 2.
(Color online) Characteristic scaling laws of the super-radiant regime.
(Color online) Spectrogram and power spectrum of the radiation pulse in the super-radiant regime.
Bunching coefficients at the first three harmonics for , in two different cases, super-radiant (a) and steady-state (b) regimes.
Power profile of first three odd harmonics of the super-radiant pulse vs longitudinal electron-beam coordinate (Perseo simulation).
Pulse shapes (continuous line) and first bunching coefficient (dashed line) at the end of each stage of the cascade vs the longitudinal electron-beam coordinate . The simulation parameters are listed in Table III.
Simulation parameters for the reference case.
Radiation seed and electron-beam parameters.
Parameters of the FEL cascade.
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