Current status of the CXI beamline at the PAL-XFEL

• Published in: Journal of the Korean Physical Society Vol. 69; no. 6; pp. 1089 - 1093
• Main Authors: Park, Jaehyun, Kim, Sangsoo, Nam, Ki-Hyun, Kim, Bongsoo, Ko, In Soo
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Physical Society 01.09.2016; Springer Nature B.V; 한국물리학회
• Subjects: Crystallography; Forward scattering; Free electron lasers; Mathematical and Computational Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Research facilities; Theoretical; X ray imagery; X-rays; 물리학; SFX; PAL-XFEL; CXI
• ISSN: 0374-4884; 1976-8524
• DOI: 10.3938/jkps.69.1089

The Pohang Accelerator Laboratory’s X-ray free electron laser (PAL-XFEL) is a research facility currently under construction. It will provide ultra-bright (1 × 10 12 photons/pulse at 12.4 keV) and ultra-short (10 − 60 femtosecond) X-ray pulses. The CXI (coherent X-ray imaging) hard X-ray experimental station is designed to deliver brilliant hard X-rays (2 − 20.4 keV) and to measure diffraction signals with a forward scattering geometry. It will not only offer imaging studies of biological, chemical and physical samples with the “diffraction-before-destruction” scheme, but also be helpful in high-field hard X-ray physics and material science. The scientific programs are currently aimed at serial femtosecond crystallography (SFX) and coherent diffraction imaging (CDI) for bio specimens, nano materials, etc. In this paper, we describe the beamline layout, beam diagnostics, X-ray focusing optics, sample environments and detector system at the CXI experimental hutch.