Open AccessDesign and performance of bending‐magnet beamline BL02B at the SSRF
Author(s) -
Meng Xiangyu,
Guo Zhi,
Wang Yong,
Zhang Hui,
Han Yong,
Zhao Gaofeng,
Liu Zhi,
Tai Renzhong
Publication year - 2019
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577518018179
Subject(s) - beamline , synchrotron radiation , neon , x ray photoelectron spectroscopy , photon energy , argon , photon , spectroscopy , atomic physics , synchrotron , physics , materials science , optics , nuclear magnetic resonance , beam (structure) , quantum mechanics
The BL02B bending‐magnet beamline at the Shanghai Synchrotron Radiation Facility (SSRF) has been constructed and is now operational for ambient‐pressure photoelectron spectroscopy (APPES) and photon‐in/photon‐out spectroscopy (PIPOS) experimental use. Optical optimization was implemented for realization of high performance, e.g. photon flux, energy‐resolving power and focus spot size. X‐ray photoelectron spectroscopy experiments show that the energy range extends from 40 to 2000 eV. Argon, nitrogen and neon gas core‐shell excitation spectra indicate energy‐resolving powers of over 1.4 × 10 4 @ 244 eV, 1.0 × 10 4 @ 401 eV and 7.0 × 10 3 @ 867 eV, respectively. The measured photon flux is 1.3 × 10 11 photons s −1 @ E /Δ E = 3700 at 244 eV at the expected sample position, for the SSRF electron energy of 3.5 GeV and electron current of 240 mA. The spot sizes are 177 µm × 23 µm and 150 µm × 46 µm at the APPES and PIPOS samples, respectively.