PLS bending magnet x-ray beamline 3C2

Abstract

The design of the 3C2 beamline at the Pohang Light Source (PLS) is described. The beamline is designed for x‐ray scattering studies with x‐ray photons over an energy range of 4–12 keV. A cylindrical Pt‐coated siliconmirror intercepts a photon beam up to 3 mrad at a distance of 16 m from a source point and focuses the beam sagittally at the sample position with a magnification of 1:1. For the vertical focusing it will be dynamically bent by the mirror holder. A double‐crystal monochromator of two Si(111) crystals with a fixed‐exit beam geometry provides monochromatic photons and is located in front of the experimental hutch to reduce the motion of the beam position. The hutch is equipped with a four‐circle diffractometer and various photon detection electronics for x‐ray scattering experiments.