Title :
Rippled-beam free-electron laser
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
We describe a new microwave generation mechanism involving a scalloping annular electron beam. The beam interacts with the axial electric field of a TM02 mode in a smooth circular waveguide through the axial free-electron laser interaction, in which the beam ripple period is synchronous with the phase slippage of the RF mode relative to the electron beam. Due to nonlinearities in the orbit equation, the interaction can be made autoresonant, where the phase and amplitude of the gain is independent of the beam energy
Keywords :
accelerator RF systems; circular waveguides; electron accelerators; electron beams; free electron lasers; microwave generation; FEL; RF mode; TM02 mode; axial electric field; axial free-electron laser interaction; microwave generation mechanism; nonlinearities; orbit equation; phase slippage; rippled-beam free-electron laser; scalloping annular electron beam; smooth circular waveguide; Conductors; Cyclotrons; Dispersion; Electron beams; Free electron lasers; Laser beams; Magnetic resonance; Masers; Nonlinear equations; Plasma waves;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753132
