List of Figures

• 2.1. Scan of the undulator gap. The integral intensity of the monochromatic beam at 92 keV is shown. At this high energies the undulator behaves like an wiggler and nearly no structure is seen for closed gap. If the gap is fairly wide open some structure is seen due to higher harmonics.
• 2.2. Stability of the monochromatic beam at the 6ID-D Side Station. The intensity of time compared to the ring current is shown. Top nearly perfect stability is shown but also in the bottom plot the beamline is quite stable. Regularily performed adjustments (every one to two hours) of the first monochromator (motor momu) or a monochromator stabilizer could easily solv the problem.
• 5.1. Example for a typical spectra picture of a data set. Here scan align04_856.fio is shown, a 2$\vartheta$ scan of a Si powder sample measured at 100 keV. The detector signal is shown in the lower left corner, the monitor signal and the ring current in the upper left corner and the sample temperature and for example a fluorescence measurement on the right. In addition information about the scan in general, the peak in the detector window and averages of the other for data sets displayed are shown.