Basic formalism for X-ray monochromator resolution
From GlueXWiki
The X-ray beam from a synchroton light source like CHESS originates in a small spot of rms typical dimensions of 1-2 mm. The divergence of the beam is of order m/E which is 100 μr for CHESS running at 5.5 GeV. The energy spectrum depends on the beam line.
C1 is a bend-magnet end station, so the spectrum is smooth from a few keV up to a broad maximum around 10 keV, above which it gradually drops off. There is very little intensity left above 50 keV. The spectrum at the left was generated using an online SR spectrum generator on the Lawrence Berkeley web site.
