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The design of the FURKA RIXS for the SwissFEL is similar to the hRIXS for the European XFEL (see P470) and benefited from the prior development of the hRIXS. The challenge here was to realize the required variable incidence angle on the detector, which is rigidly connected to the detector chamber, without blocking part of the beam and the detector.
This monochromator was developed as a combination of a DCM and a multilayer PGM in order to cover the whole available tender X-ray energy range of 1.5-10 keV at the MIFO beamline of the PTB at BESSY using one monochromator system only. Change of operation mode between PGM and DCM is automated and does not require venting of the system.
The hexapod units for the MIFO beamline of the PTB at BESSY feature the lastest updates of the hexapod design for compact size, straightforward alignment, and calibration at reliably excellent performance.
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