SAXS

The small angle x-ray scattering beamline at the J. Bennett Johnston, Sr. Center for Advanced Microstructures & Devices is located on bending magnet port 6A of the CAMD storage ring. The LNLS double crystal monochromator allows photon energies to be selected from roughly 3 to 14 keV.  Beam size on the sample and parasitic scattering are controlled by three interchangeable pinholes with current spot size of 400 um.  The SAXS sample chamber incorporates computer controlled 2D sample translation stages for remote alignment and sample change.  Sample dynamics can be studied with the shear cell and hot stage.  The scattering pattern is imaged with a Gabriel style multiwire gas detector with a 200 mm active diameter and a resolution of 200-250 μm FWHM in a 1024 x 1024 array. Wide angle scattering can be performed with the PhosphorImager SI image plate and scanner.  A segmented flight path allows SAXS q‑ranges from .0015 to .44 Å-1 and WAXS to 2.5 Å-1.