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Figure 12
Examples from the commissioning of the new ZPM monochromator. (a) Image in the dispersion plane with the undulator's fifth harmonic set slightly below focus. If the yaw setting is detuned only by ±0.01° the orientation and symmetry of the off-focus image can be used to optimize the alignment of the lens for maximum resolution and transmission. (b) Transmittance spectrum from a GdTb thin film sample taken at the new ZPM after the upgrade using the Gd lens and 20 µm exit slit.

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