• Optics and Precision Engineering
  • Vol. 15, Issue 12, 1844 (2007)
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  • [in Chinese]
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    DOI: Cite this Article
    [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Design of VUV beamline for ARPES studies at SSRF[J]. Optics and Precision Engineering, 2007, 15(12): 1844 Copy Citation Text show less

    Abstract

    Vacuum ultraviolet(VUV)beamlines have been playing an important role in studying the electronic structure of solids.Until now,over 30 VUV beamlines for Angle-resolved Photoemission Spectroscopy(ARPES)studies have been built in the synchrotron radiation facilities of US,Japan and Europe.In this work,we present a design of a high-resolution and high-flux VUV beamline covering 5~140 eV photon energy range at Shanghai Synchrotron Radiation Facility(SSRF)for ARPES studies.A quasi-periodic Elliptical Polarized Undulator(EPU)with 14 periods and each 0.32 m long is used as the source.A Dragon-type monochromator with two branches,a lower energy branch covering 5~32 eV and a higher one covering 25~140 eV,is employed.Calculations show that the total resolutions of the monochromator can reach up to 15 000~100 000 with entrance/exit slit openings of 5/5 μm and the ultimate flux of the s-polarized photon on a sample exceeds~1012phs/s.The figure slope errors dominate the total resolution limit of the monochromator.Ray-tracing simulations show that the designed beamline has a good focusing performance.This beamline will be the first VUV beamline constructed at SSRF and will provide valuable experience for future constructions.
    [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Design of VUV beamline for ARPES studies at SSRF[J]. Optics and Precision Engineering, 2007, 15(12): 1844
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