First Observation of z -Dependent Electron-Beam Microbunching Using Coherent Transition Radiation
Journal Article
·
· Physical Review Letters
We report the first measurements of the electron-beam microbunching z dependence in a self-amplified spontaneous-emission (SASE) free-electron laser (FEL) experiment by the observation of visible wavelength coherent transition radiation (CTR). In this case the fundamental SASE wavelength was at 537nm, and the CTR exhibited an exponential intensity growth similar to the SASE radiation. In addition, we observed for the first time structure in the CTR angular distribution patterns that may be useful for optimizing SASE FEL performance.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40205694
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 1 Vol. 86; ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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