I18 End Station

Si(111) monochromator and 27 mm period undulator.
     Energy range 2.05- 20.7 keV (core range 5 -15 keV).
     Can be used from 7 -20 keV in Si(333) mode with less flux but higher resolution.

Mechanical KB mirrors with Si and Rh stripes.
      Mirrors can be moved from beam path for bulk EXAFS.
      Down to 2 -5 (V) x 2 – 5(H) μm spot size.

Two motorised sample stages
     Small stage (range - 25 mm(X), 30 mm(Y), 4 kg load) – XRF mapping.
     Large sample stage (range – 100 mm(X), 30 mm(Y)) – larger sample area.
 

Showing the smaple area in the I18 beamline with schematic and lable displaying two main modes of detection - Transmission(It) and fluorescence(If). For XRD, the excalibur detector is typically in the postion of the It ion chamber.