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Slac-pub-11239 free electron lasers with slowly varying beam and undulator parameters ∗ (2005).
| Content Provider | CiteSeerX |
|---|---|
| Abstract | The performance of a free electron lasers (FEL) is affected when the electron beam energy varies alone the undulator as would be caused by vacuum pipe wakefields and/or when the undulator strength parameter is tapered in the small signal regime until FEL saturation. In this paper, we present a self-consistent theory of FELs with slowly-varying beam and undulator parameters. A general method is developed to apply the WKB approximation to the beam-radiation system by employing the adjoint eigenvector that is orthogonal to the eigenfunctions of the coupled Maxwell-Vlasov equations. This method may be useful for other slowly varying processes in beam dynamics. |
| File Format | |
| Publisher Date | 2005-01-01 |
| Access Restriction | Open |
| Subject Keyword | Undulator Parameter Slac-pub-11239 Free Electron Laser Slowly Varying Beam Free Electron Laser Small Signal Regime Wkb Approximation Coupled Maxwell-vlasov Equation General Method Slowly-varying Beam Fel Saturation Electron Beam Energy Varies Beam Dynamic Beam-radiation System Vacuum Pipe Wakefields Undulator Strength Parameter Self-consistent Theory Adjoint Eigenvector |
| Content Type | Text |
