Spectral monitoring at SwissFEL using a high-resolution on-line hard X-ray single-shot spectrometer.
Christian DavidGediminas SeniutinasMikako MakitaBenedikt RoesnerJens RehanekPetri KarvinenFlorian LöhlRafael AbelaLuc PattheyPavle JuranićPublished in: Journal of synchrotron radiation (2021)
The performance and parameters of the online photon single-shot spectrometer (PSSS) at the Aramis beamline of the SwissFEL free-electron laser are presented. The device operates between the photon energies 4 and 13 keV and uses diamond transmission gratings and bent Si crystals for spectral measurements on the first diffraction order of the beam. The device has an energy window of 0.7% of the median photon energy of the free-electron laser pulses and a spectral resolution (full width at half-maximum) ΔE/E on the order of 10-5. The device was characterized by comparing its performance with reference data from synchrotron sources, and a parametric study investigated other effects that could affect the reliability of the spectral information.
Keyphrases
- high resolution
- dual energy
- optical coherence tomography
- electron microscopy
- computed tomography
- living cells
- high speed
- monte carlo
- health information
- social media
- density functional theory
- atomic force microscopy
- magnetic resonance imaging
- big data
- fluorescent probe
- contrast enhanced
- machine learning
- deep learning
- electron transfer