SAXS Beamline

    • Scientific Applications
      • SAXS/WAXS
      • Solution Scattering
      • Fiber diffraction
      • Anomalous SAXS
    • Source characteristics
      • Bending Magnet Port 6A
      • Electron Beam energy 1.3 GeV
      • Dipole field 1.48 T
      • Characteristic energy 1.66 keV
    • Optics
      • LNLS double crystal monochromator
      • Si 111 and Ge 220 crystals
      • Practical energy range from 3 to 14 keV
      • Distance from source
      • Acceptance 2 mrad
      • Energy resolution dE/E
      • Flux before pinholes = 7 x 109 @ 8keV
      • Flux at sample =
    • Experimental setup
      • 2D control for sample alignment and change
      • Mettler hot stage
      • Linkam shear cell
    • Detection
      • Gabriel type 2D multi-wire gas proportional counter
        • Gabriel type 2D multi-wire gas proportional counter
        • 200 mm active diameter
        • 1024 x 1024 array
        • Photodiode at beam stop
        • Detector resolution 200 – 250 μm FWHM @ 8keV
        • q range from .0015 to .44 Å-1
      • Image Plate and Scanner
        • 50, 100, or 200 μm pixel size
        • 4000 x 5000 maximum pixel array
        • Q range from .04 to 2.0 Å-1
    • Camera
      • 3 pinhole .2, .4, and .8 mm diameter
      • Vacuum flight path sections allow sample to detector distance of .9m to 4.9m
    • Other Equipment
      • X-ray Eye
      • Two ion chambers for flux monitoring
      • Optical laser to aid sample alignment (in progress)
    • Software

     

    LSU