ABSTRACT
Let us consider the example of the undulator section with a beam of En=5 = 30 keV and using the fifth harmonic of the undulator spectrum. We will use a quite complicated schematic optical setup to explain the single devices in the DuMond diagrams. The setup is as follows (see Figure 2.12 undulator, silicon double crystal monochromator (111 Bragg reflection, vertical scattering geometry, offset pointing up), vertical collimation mirror, silicon double crystal monochromator (311 Bragg reflection, vertical scattering geometry, offset pointing down), and silicon crystal monochromator (111 Bragg reflection, horizontal scattering geometry).
