Abstract
ABSTRACT Pohang Accelerator Laboratory X-ray Free Electron Laser (PAL-XFEL) is a research facility currently under construction. It will provide ultra-bright (assuming 1 X 10 12 photons/pulse at 12.4 keV) and ultra-short (10-60 femtosecond) X-ray pulses. The CXI (Coherent X-ray Imaging) end-station, which will be constructed for hard X-ray beamline at the PAL-XFEL, is designed to deliver brilliant hard x-rays (2-20 keV) and to measure diffraction signals with forward scattering geometry, mainly. Not only will it offer imaging studies of biological, chemical and physical samples by the diffract-before-destroy technique, but will also be helpful in high field hard x-ray physics and material science. The scientific programs are currently aimed at serial femtosecond crystallography (SFX) for macromolecular systems and coherent diffraction imaging for bio specimens and nano structures etc. In this paper, we describe the details of the beamline layout, X-ray focusing optics (Kirkpatrick-Baez mirror and Beryllium CRLs) and sample delivery system (liquid jet/LCP sample injector, fixed target system) that will be installed at the CXI beamline. Keywords: PAL-XFEL, CXI, endstation
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