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Title: High-resolution single-shot spectral monitoring of hard x-ray free-electron laser radiation

Journal Article · · Optica
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  1. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. European XFEL GmbH, Hamburg (Germany)
+ Show Author Affiliations

We have developed an on-line spectrometer for hard x-ray free-electron laser (XFEL) radiation based on a nanostructured diamond diffraction grating and a bent crystal analyzer. Our method provides high spectral resolution, interferes negligibly with the XFEL beam, and can withstand the intense hard x-ray pulses at high repetition rates of >100 Hz. The spectrometer is capable of providing shot-to-shot spectral information for the normalization of data obtained in scientific experiments and optimization of the accelerator operation parameters. We have demonstrated these capabilities of the setup at the Linac Coherent Light Source, in self-amplified spontaneous emission mode at full energy of >1 mJ with a 120 Hz repetition rate, obtaining a resolving power of Ε/δΕ > 3 × 104. In conclusion, the device was also used to monitor the effects of pulse duration down to 8 fs by analysis of the spectral spike width.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1228043
Journal Information:
Optica, Vol. 2, Issue 10; ISSN 2334-2536
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 42 works
Citation information provided by
Web of Science

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Cited By (13)

A beam branching method for timing and spectral characterization of hard X-ray free-electron lasers journal January 2016
Perspective: Opportunities for ultrafast science at SwissFEL journal November 2017
On-line monitoring of the spatial properties of hard X-ray free-electron lasers based on a grating splitter journal April 2019
Characterizing transmissive diamond gratings as beam splitters for the hard X-ray single-shot spectrometer of the European XFEL journal April 2019
Diffraction properties of a strongly bent diamond crystal used as a dispersive spectrometer for XFEL pulses journal June 2019
Short-wavelength free-electron laser sources and science: a review text January 2017
SwissFEL: The Swiss X-ray Free Electron Laser journal July 2017
SwissFEL Aramis beamline photon diagnostics text January 2018
X-ray photon diagnostics at the European XFEL text January 2019
Perspective: Opportunities for ultrafast science at SwissFEL text January 2017
Perspective: Opportunities for ultrafast science at SwissFEL text January 2017
Short-wavelength free-electron laser sources and science: a review journal October 2017
Output coupling from x-ray free-electron laser cavities with intracavity beam splitters text January 2019

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