Novel monochromator concept for sagittal micro-focusing of undulator radiation

Schulze-Briese, Clemens; Heidenreich, G.; Auderset, H.; Vermeulen, D.; Freund, Andreas K.

doi:10.1117/12.332502

Cited by 8 publications

(4 citation statements)

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“…It should also be mentioned that the same volume of the crystal should be irradiated during data collection, which may require defocusing the beam, as was performed in the present study. Indeed, if different parts of a crystal were irradiated variably (Schulze-Briese et al, 2005), it would not be possible to consider each individual intensity measurement to correspond to a given dose and thus to a given state of radiation damage.…”

Section: Discussionmentioning

confidence: 99%

Using X-ray absorption spectra to monitor specific radiation damage to anomalously scattering atoms in macromolecular crystallography

Oliéric

Ennifar

Meents³

et al. 2007

Acta Crystallogr D Biol Cryst

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# 2007 International Union of CrystallographyPrinted in Denmark -all rights reserved Radiation damage in macromolecular crystals is not suppressed even at 90 K. This is particularly true for covalent bonds involving an anomalous scatterer (such as bromine) at the 'peak wavelength'. It is shown that a series of absorption spectra recorded on a brominated RNA faithfully monitor the extent of cleavage. The continuous spectral changes during irradiation preserve an 'isosbestic point', each spectrum being a linear combination of 'zero' and 'infinite' dose spectra. This easily yields a good estimate of the partial occupancy of bromine at any intermediate dose. The considerable effect on the near-edge features in the spectra of the crystal orientation versus the beam polarization has also been examined and found to be in good agreement with a previous study. Any significant influence of the (C-Br bond/beam polarization) angle on the cleavage kinetics of bromine was also searched for, but was not detected. These results will be useful for standard SAD/MAD experiments and for the emerging 'radiation-damage-induced phasing' method exploiting both the anomalous signal of an anomalous scatterer and the 'isomorphous' signal resulting from its cleavage.

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Section: Discussionmentioning

confidence: 99%

Using X-ray absorption spectra to monitor specific radiation damage to anomalously scattering atoms in macromolecular crystallography

Oliéric

Ennifar

Meents³

et al. 2007

Acta Crystallogr D Biol Cryst

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“…Currently, the hard X-ray monochromators of the SLS have a vertical offset of typically 50 mm. In addition, the current design includes a sagittal bender (Schulze-Briese et al, 1998), which bends the second crystal in the sagittal direction with respect to the Figure 1 A schematic illustration of the design for hard X-ray ID beamlines at SLS 2.0 (a top view). After the undulator and front end, the beamline is composed of a section that accommodates one or two monochromators with the same horizontal beam offset, with only one to be used at any one time.…”

Section: Monochromator Conceptmentioning

confidence: 99%

The concept for hard X-ray beamline optics at SLS 2.0

Roesner,

Raabe,

Willmott

et al. 2024

J Synchrotron Radiat

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In the scope of the latest upgrade of the Swiss Light Source, five hard X-ray beamlines will be constructed or rebuilt. To use synergies between these beamline projects, a concept is developed here for hard X-ray beamlines that is tailored to the new storage ring. Herein, this concept is described from the source, via the front end, to the beamline optics. The latter will be outlined in detail, including a new and modular concept for hard X-ray monochromators, focusing optics and heat-load management. With a simple, easy-to-operate and robust beamline design, the new beamlines will greatly profit from the increased brilliance of the new storage ring. The performance increase is up to four orders of magnitude, while the beamline concept allows for the broad application of experimental techniques, from propagation-based methods, such as phase-contrast tomography, to imaging techniques with nanometre resolution. At the same time, spectroscopy experiments are possible as well as high-performance serial X-ray crystallography.

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“…Due to the horizontal beamline acceptance, the transverse footprint on the sagittal crystal is of 10 mm, which places this bender between the normal ESRF bending magnet sagittal bender [6] equipped with ribs and adapted for horizontal beam sizes of 100 mm and the one designed at SLS for undulator sources [7] dealing with horizontal beam sizes less than 4 mm. …”

Section: Dcmmentioning

confidence: 99%

Ray tracing application in hard x-ray optical development: Soleil first wiggler beamline (PSICHÉ) case

et al. 2011

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Optical design of hard x-ray beamlines can be accurately performed through ray tracing simulation technique. We describe here the way and the tools we use at SOLEIL to develop hard x-ray beamlines such as PSICHÉ, which is a wiggler beamline performing diffraction and tomography experiments from 20 to 50 keV. This beamline is made of two focusing stages, one with a long vertical focusing mirror together with a sagittal focusing crystal monochromator to gain a spot of 100×50 μm and the other one applying a set of graded multilayer KB mirrors to reach 10×10 μm spot. Ray tracing simulations are performed with SpotX, which provides optical properties of the beamline taking into account thermal load on optics, surface polishing defects from the profilometer measurements.

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Novel monochromator concept for sagittal micro-focusing of undulator radiation

Cited by 8 publications

References 0 publications

Using X-ray absorption spectra to monitor specific radiation damage to anomalously scattering atoms in macromolecular crystallography

Using X-ray absorption spectra to monitor specific radiation damage to anomalously scattering atoms in macromolecular crystallography

The concept for hard X-ray beamline optics at SLS 2.0

Ray tracing application in hard x-ray optical development: Soleil first wiggler beamline (PSICHÉ) case

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