The seed energy fluctuation of hard X-ray self-seeding free electron laser
نویسندگان
چکیده
منابع مشابه
Two-bunch self-seeding for narrow-bandwidth hard x-ray free-electron lasers∗
It is well known that seeding can be used to produce narrow-bandwidth and fully coherent x-ray freeelectron lasers (FELs). Self-seeding, which uses an extra undulator to generate the seed pulse, is perhaps one of the most promising methods to accomplish this. In the hard x-ray regime with high-energy electrons, this method requires a large magnetic chicane to match the path-length delay of the ...
متن کاملCompact coherence enhancement by subharmonic self-seeding in X-ray free-electron laser facilities
X-ray free-electron lasers (FELs) are cutting-edge scientific tools able to generate transversely coherent radiation with very high power and ultra-short pulse durations. The self-seeding mechanism has been proven to increase the longitudinal coherence of the FEL radiation but its efficiency could be significantly improved, especially for soft X-rays. This paper proposes the enhancement of the ...
متن کاملSingle Shot Coherence Properties of the Free-Electron Laser SACLA in the Hard X-ray Regime
We measured the coherence properties of the free-electron laser SACLA on a single shot basis at an X-ray energy of 8 keV. By analysing small-angle X-ray scattering speckle patterns from colloidal dispersions we found a degree of transverse coherence of βt = 0.79 ± 0.09. Taking detector properties into account, we developed a simulation model in oder to determine the degree of coherence from int...
متن کاملCharacterization of temporal coherence of hard X-ray free-electron laser pulses with single-shot interferograms
Temporal coherence is one of the most fundamental characteristics of light, connecting to spectral information through the Fourier transform relationship between time and frequency. Interferometers with a variable path-length difference (PLD) between the two branches have widely been employed to characterize temporal coherence properties for broad spectral regimes. Hard X-ray interferometers re...
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ژورنال
عنوان ژورنال: AIP Advances
سال: 2019
ISSN: 2158-3226
DOI: 10.1063/1.5091018