Electron rebunching and radiation gain in two-element free-electron lasers
Abstract
The interaction between the electron and the radiation in a free electron laser leads to a shift and a spread of the electron velocity distribution. The shift represents the energy transfer from the electron beam to the radiation. The spread would limit the usability of the beam if electrons are to be recycled. Their ratio would thus determine the efficiency of the free electron lasers which recirculates the electrons. The electron dynamics of a two-element system is studied in the small signal region. It is found that the efficiency can be highly increased by introducing an adjustable drift distance between two identical wigglers.
- Publication:
-
Free-Electron Generators of Coherent Radiation
- Pub Date:
- 1980
- Bibcode:
- 1980fegc.proc..473S
- Keywords:
-
- Electromagnetic Interactions;
- Electron Bunching;
- Energy Transfer;
- Free Electron Lasers;
- Laser Outputs;
- Power Gain;
- Electron Distribution;
- Lasing;
- Particle Motion;
- Relativistic Electron Beams;
- Lasers and Masers