Status of PETRA III photon beamline frontends and optical systems

Schulte‐Schrepping, H.; Degenhardt, M.; Peters, H. B.; Hahn, Ulrich; Heuer, J.; Hesse, M.

doi:10.1088/1742-6596/425/4/042005

Cited by 6 publications

(5 citation statements)

References 4 publications

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“…Cryo-cooled DCM. The cryo-cooled DCM of beamline P62 is the standard PETRA III high-heat-load monochromator with some modifications to further improve the monochromatic beam stability (Schulte-Schrepping et al, 2013). Extensive work has been done to improve the overall stability of the monochromators for the PETRA III extension.…”

Section: Beamline Opticsmentioning

confidence: 99%

The new small-angle X-ray scattering beamline for materials research at PETRA III: SAXSMAT beamline P62

Haas,

Sun,

Conceição

et al. 2023

J Synchrotron Rad

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The SAXSMAT beamline P62 (Small-Angle X-ray Scattering beamline for Materials Research) is a new beamline at the high-energy storage ring PETRA III at DESY. This beamline is dedicated to combined small- and wide-angle X-ray scattering (SAXS/WAXS) techniques for both soft and hard condensed matter systems. It works mainly in transmission geometry. The beamline covers an energy range from 3.5 keV to 35.0 keV, which fulfills the requirements of the user community to perform anomalous scattering experiments. Mirrors are used to reduce the intensity of higher harmonics. Furthermore, the mirrors and 2D compound refracting lenses can focus the beam down to a few micrometres at the sample position. This option with the high photon flux enables also SAXS/WAXS tensor tomography experiments to be performed at this new beamline in a relatively short time. The first SAXS/WAXS pattern was collected in August 2021, while the first user experiment was carried out two months later. Since January 2022 the beamline has been in regular user operation mode. In this paper the beamline optics and the SAXS/WAXS instrument are described and two examples are briefly shown.

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Section: Beamline Opticsmentioning

confidence: 99%

The new small-angle X-ray scattering beamline for materials research at PETRA III: SAXSMAT beamline P62

Haas,

Sun,

Conceição

et al. 2023

J Synchrotron Rad

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“…The second monochromator is a double-crystal fixed-exit monochromator (DCM), which has been designed by Oxford Ltd.. The design is based on the previous design for the first x-ray beamlines at PETRA III [11], with a few modifications to reduce the oscillations of the second crystal [12]. In short, both monochromator crystals are cooled to liquid nitrogen temperature in order to reduce lattice strain by the heat-load impinging on the first crystal.…”

Section: Monochromatorsmentioning

confidence: 99%

High-flux XAFS-beamline P64 at PETRA III

Caliebe¹,

Murzin²,

Kalinko³

et al. 2019

AIP Conference Proceedings

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Beamline P64 at PETRA III is dedicated to x-ray absorption spectroscopy experiments which require high flux, like quick extended x-ray absorption fine structure spectroscopy on the sub-second time scale, high-resolution resonant emission spectroscopy, and x-ray absorption fine-structure spectroscopy of highly diluted systems. The beamline is installed at the high-energy storage ring PETRA III. The source is a 2 m-long undulator. The beamline covers an energy-range from 4 keV to 44 keV, which was required by the user community. Mirrors can be used to reduce the intensity of higher harmonics, and to focus the beam. A conventional photo-diode and a 100-pixel high-purity Ge-detector are used in fluorescence extended x-ray absorption fine-structure spectroscopy for diluted samples.

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“…The insertion device is a 2 m U29 undulator, canted by 5 mrad to the P06 undulator, which is located downstream. As shown in figure 1, the frontend furthermore contains a slit system and filters (4 mm glassy carbon and 300 μm CVD with 50 μm Cu) [1]. Two monochromators are located in the optics hutch: a Double Crystal Monochromator (DCM) and a Double Multilayer Monochromator (DMM).…”

Section: Beamline Descriptionmentioning

confidence: 99%