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Figure 2
Layout of the optics installed at the hard X-ray beamline of PAL-XFEL. In the optical hutch, three flat mirrors and a Si double-crystal monochromator (DCM) are installed to deliver X-rays to the experimental hutch (EH). Focusing optics at the EH are used to focus the X-rays at the interaction point. (a) A pair of mirrors M1–M2 reflects the X-rays with energies lower than 9.5 keV. Due to the cut-off energy, high harmonics are rejected in this configuration. (b) The DCM is used alternatively when high-energy resolution is required for X-ray experiments. Key components are labeled: flat mirror (M), double-crystal monochromator (DCM), horizontal focusing mirror (HFM) and vertical focusing mirror (VFM).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 2| March 2025| Pages 466-473
https://doi.org/10.1107/S1600577525000426
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