High Heat Load Diamond Monochromator Project at ESRF

Due to its outstanding thermal properties, diamond is an attractive alternative to silicon as a monochromator material for high intensity X-ray beams. To date, however, the practical applications have been limited by the small size and relatively poor crystallograpbic quality of the crystals availab...

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Bibliographic Details
Published in:Proceedings of the 10th International Conference 2009-10, Vol.1234, p.229-232
Main Authors: Van Vaerenbergh, P, Detlefs, C, Hartwig, J, Lafford, T A, Masiello, F, Roth, T, Schmid, W, Wattecamps, P, Zhang, L
Format: Article
Language:English
Subjects:
Beams (radiation)
Beams (structural)
Crystals
Diffraction
Finite element method
Footprints
Imaging
Low energy
Mathematical analysis
Modelling
Monochromators
Mounting
Silicon
Thermal properties
X-rays
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Summary:Due to its outstanding thermal properties, diamond is an attractive alternative to silicon as a monochromator material for high intensity X-ray beams. To date, however, the practical applications have been limited by the small size and relatively poor crystallograpbic quality of the crystals available. The ESRF Diamond Project Group has studied the perfection of diamonds in collaboration with industry and universities. The group has also designed and tested different stress-free mounting techniques to integrate small diamonds into larger X-ray optical elements. We now propose to develop a water-cooled Bragg-Bragg double crystal monochromator using diamond (111) crystals. It will be installed on the ESRF undulator beamline, ID06, for testing under high heat load. This monochromator will be best suited for the low energy range, typically from similar to 3.4 keV to 15 keV, due to the small size of the diamonds available and the size of the beam footprint. This paper presents stress-free mounting techniques studied using X-ray diffraction imaging, and their thermal-mechanical analysis by finite element modelling, as well as the status of the ID06 monochromator project.
ISSN:0094-243X