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- Title
Spectral monitoring at SwissFEL using a high‐resolution on‐line hard X‐ray single‐shot spectrometer.
- Authors
David, Christian; Seniutinas, Gediminas; Makita, Mikako; Rösner, Benedikt; Rehanek, Jens; Karvinen, Petri; Löhl, Florian; Abela, Rafael; Patthey, Luc; Juranić, Pavle
- Abstract
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.
- Subjects
X-ray spectrometers; HARD X-rays; FREE electron lasers; LASER pulses; SPECTROMETERS; PHOTONS
- Publication
Journal of Synchrotron Radiation, 2021, Vol 28, Issue 6, p1978
- ISSN
0909-0495
- Publication type
Article
- DOI
10.1107/S1600577521009619