Upgrade of beamline BL08B at Taiwan Light Source from a photon-BPM to a double-grating SGM beamline

During the last 20 years, beamline BL08B has been upgraded step by step from a photon beam-position monitor (BPM) to a testing beamline and a single-grating beamline that enables experiments to record X-ray photo-emission spectra (XPS) and X-ray absorption spectra (XAS) for research in solar physics, organic semiconductor materials and spinel oxides, with soft X-ray photon energies in the range 300–1000 eV. Demands for photon energy to extend to the extreme ultraviolet region for applications in nano-fabrication and topological thin films are increasing. The basic spherical-grating monochromator beamline was again upgraded by adding a second grating that delivers photons of energy from 80 to 420 eV. Four end-stations were designed for experiments with XPS, XAS, interstellar photoprocess systems (IPS) and extreme-ultraviolet lithography (EUVL) in the scheduled beam time. The data from these experiments show a large count rate in core levels probed and excellent statistics on background normalization in the L-edge adsorption spectrum.

Source: Journal of Synchrotron Radiation - August 8, 2015 Category: Physics Authors: Yuh, J.-Y.Lin, S.-W.Huang, L.-J.Fung, H.-S.Lee, L.-L.Chen, Y.-J.Cheng, C.-P.Chin, Y.-Y.Lin, H.-J. Tags: extreme ultraviolet (EUV) soft X-rays spherical-grating monochromator (SGM) beamline Taiwan Light Source photon beam-position monitor (BPM) beamlines Source Type: research