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Active Q-Switched X-Ray Regenerative Amplifier Free-Electron Laser
Jingyi Tang1, Zhen Zhang1, Jenny Morgan1
1SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
Physical Review Letters
|August 18, 2023
Summary
This study introduces a novel active Q-switched x-ray regenerative amplifier free-electron laser (FEL) scheme. It achieves fully coherent, high-brightness hard x rays at high repetition rates, advancing FEL science.
Area of Science:
- Physics
- Laser Science
- Materials Science
Background:
- Existing x-ray free-electron laser (FEL) facilities struggle to produce fully coherent and stable x rays.
- Future scientific applications require enhanced x-ray properties beyond current capabilities.
Purpose of the Study:
- To propose and investigate an active Q-switched x-ray regenerative amplifier FEL scheme.
- To achieve fully coherent, high-brightness, hard x rays at high repetition rates.
Main Methods:
- Theoretical and numerical studies of the proposed FEL scheme.
- Electron-beam phase space manipulation for controlling cavity quality factor (Q).
- Exploration of various accelerator, x-ray cavity, and undulator parameters.
Main Results:
- Demonstration of a flexible scheme for controlling x-ray cavity Q and output radiation.
- Potential for producing fully coherent, high-brightness, hard x rays.
- High-repetition rate capability.
Conclusions:
- The active Q-switched x-ray regenerative amplifier FEL scheme offers a promising path towards next-generation coherent x-ray sources.
- This approach provides flexibility in tailoring x-ray output properties.
- The findings pave the way for advanced applications in various scientific fields.
