Current Status of the Submicron Soft X-ray Active Grating Monochromator Beamline for Ultra-High Resolution Angle-Resolved Photoemission Spectroscopy
Huangwen Fu1*, Huang-Ming Tsai1, Chang-Yang Kuo1,2, Liang-Jen Huang1, Tai-Yuan Wang1, Shang-Wei Lin1, Chih-Yu Hua1, Duan-Jen Wang1, Kai-Yang Kao1, Cheng-Yang Lin1, Chun-Fu Chang2, Ashish Chainani1, Liu Hao Tjeng2, Chien-Te Chen1
1National Synchrotron Radiation Research Center, Hsinchu, Taiwan
2Max Planck Institute for Chemical Physics of Solids, Dresden, Germany
* Presenter:Huangwen Fu,
The Taiwan photon source 45A NSRRC-MPI beamline has been commissioning. A low-vibration cooling circulator has been installed for HFM and suppressed the vibration in raw from 0.2 μrad to 0.043 μrad (R.M.S). An in-situ long trace profiler has been installed for measuring the surface profile of active grating. The slope error has been reduced to 0.35 μrad in full acceptance and the energy resolving power is routinely operated around 20,000 between 500-1000 eV. A routinely operated beam size at the sample position is 2 μm in horizontal and 1 μm in vertical. This beamline is feasible for ARPES measurements of 3d transition metal.

Keywords: Soft X-ray, beamline