Chirped-Beam Two-Stage SASE-FEL for High Power Femtosecond X-Ray Pulse Generation
We present a method for generating femtosecond duration x-ray pulses using a single-pass free-electron laser (FEL). This method uses an energy-chirped electron beam to produce a frequency-chirped x-ray pulse through self-amplified spontaneous emission (SASE). After the undulator we consider passing the radiation through a monochromator. The frequency is correlated to the longitudinal position within the pulse, and therefore, by selecting a narrow bandwidth, a short temporal pulse will be transmitted. The short pulse radiation is used to seed a second undulator, where the radiation is amplified to saturation. In addition to short pulse generation, this scheme has the ability to control shot-to-shot fluctuations in the central wavelength due to electron beam energy jitter. We present calculations of the radiation characteristics produced by a chirped-beam two-stage SASE-FEL, and consider the performance of the chirped-beam two-stage option for the Linac Coherent Light Source (LCLS).
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 800011
- Report Number(s):
- SLAC-PUB-9370; TRN: US200308%%485
- Resource Relation:
- Other Information: PBD: 20 Aug 2002
- Country of Publication:
- United States
- Language:
- English
Similar Records
Femtosecond X-ray Pulses From a frequency chirped SASE FEL
Femtosecond X-ray Pulses from a Spatially Chirped Electron Bunch in a SASE FEL