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Novel experimental setup for megahertz X-ray diffraction in a diamond anvil cell at the High Energy Density (HED) instrument of the European X-ray Free-Electron Laser (EuXFEL)

Abstract:
The high-precision X-ray diffraction setup for work with diamond anvil cells (DACs) in interaction chamber 2 (IC2) of the High Energy Density instrument of the European X-ray Free-Electron Laser is described. This includes beamline optics, sample positioning and detector systems located in the multipurpose vacuum chamber. Concepts for pump-probe X-ray diffraction experiments in the DAC are described and their implementation demonstrated during the First User Community Assisted Commissioning experiment. X-ray heating and diffraction of Bi under pressure, obtained using 20 fs X-ray pulses at 17.8 keV and 2.2 MHz repetition, is illustrated through splitting of diffraction peaks, and interpreted employing finite element modeling of the sample chamber in the DAC.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1107/s1600577521002551

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Role:
Author
ORCID:
0000-0001-5039-1183


Publisher:
International Union of Crystallography
Journal:
Journal of Synchrotron Radiation More from this journal
Volume:
28
Issue:
3
Pages:
688-706
Place of publication:
United States
Publication date:
2021-04-14
Acceptance date:
2021-03-08
DOI:
EISSN:
1600-5775
ISSN:
0909-0495
Pmid:
33949979


Language:
English
Keywords:
Pubs id:
1178078
Local pid:
pubs:1178078
Deposit date:
2023-07-10

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