Abstract
The technical design and mechanical engineering of the three large monochromator systems at the beamlines P03, P06 and P08 will be presented. To achieve a compact arrangement of the canted undulator beamlines at Sectors 2 and 6, it is necessary to shift one of the two beamlines in vertical direction. This is done by Large Offset Monochromators (LOM). LOM500 installed at beamline P03 is cooled with liquid nitrogen as it accepts the white beam. LOM1250 installed at beamline P08 accepts a monochromatic beam and therefore needs no cooling system. The challenge with this monochromator is its large beam offset by 1.25 m. The energy range in combination with this large vertical beam offset requires a relative crystal movement of roughly 3 m along the beam direction. A third monochromator at the beamline P06 shifts the beam only by 21 mm upwards but has a linear travel of one crystal by 3.9 m. This is due to its large energy range of 4.4 – 90 keV using multilayer crystals.
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