Bending magnet VUV beamline 2B at the Pohang Light Source

Abstract

The SGM beamline (2B1), designed for photoemission spectroscopy, accepts a photon beam 10 mrad horizontally and 2 mrad vertically from a bending magnet source. The operating energy range of the monochromator is 12–1230 eV and the grating chamber has five exchangeable laminar gratings to cover the range. The monochromator employs a fixed entrance slit and a movable exit slit to satisfy the focusing condition during photon energy scan. The NIM beamline (2B2) is designed for 5–30 eV photon energy. The type of monochromator to be installed is 3 m normal incident, with off-Rowland circle mounting. A gas-phase experimental system, equipped with differential pumping stages, will be installed in the NIM beamline.