BAMline: the first hard X-ray beamline at BESSY II

Görner, W.; Hentschel, Manfred P.; Müller, Bernd R.; Riesemeier, H.; Krumrey, Michael; Ulm, G.; Diete, W.; Klein, U.; Frahm, R.

doi:10.1016/s0168-9002(01)00466-1

Cited by 195 publications

(105 citation statements)

References 5 publications

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“…Then at ELETTRA bending magnets such optics can provide one-or two-dimensionally focused beams with a relative half-width of the transmission function according to Eqn (16) can be better with values of 0.6-1.2%. These numbers are comparable to the performance of multilayer coatings, 24 so that these optics could eventually be used in combinations.…”

Section: Theoreticalmentioning

confidence: 79%

“…Obviously an alligator lens can also be used as an alternative to mirrors for x-ray beamlines, which operate crystal or multilayer mirror monochromators 24 either at fixed photon energy or with tunable photon energy. Such an in-line lens can easily be added to already operational instruments, in which beam focusing or collimation should be added.…”

Section: Resultsmentioning

confidence: 99%

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A simple x‐ray monochromator based on an alligator lens

Jark

2004

X-Ray Spectrometry

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Alligator lenses, i.e. two inclined arrays of sawteeth or prisms, which face each other, can focus x-rays with photon energies >4 keV. The inclination angle can be changed easily, and thus either the focal length for fixed photon energy or the photon energy in a fixed slit position can be varied. The material distribution in this condition is approximately parabolic along the teeth axis, hence it is of the shape required for aberration-free focusing at a given photon energy. As the refractive index varies significantly with photon energy in the x-ray range, these lenses suffer from chromatic aberrations, if illuminated with white x-rays. In combination with a slit such a lens can therefore be used as an easily insertable inline monochromator. In this work, a simple universal function for the dependence of the transmission on the photon energy was derived for this application. The required tolerances for the shape of the sawteeth are found to be compatible with standard workshop machining procedures. A laboratory-made lens of Plexiglas is shown to increase the flux density in a laboratory setup by a factor of 3, i.e. 50% of the expected result for a perfect lens. The discrepancy can be consistently ascribed to macroscopic defects of the sawteeth tips. Expectations for the performance of these lenses as monochromators at synchrotron radiation sources are presented. A single Be alligator lens is expected to provide tuning between at least 8 keV and 20 keV photon energy with a bandpass of 6%, sufficient for XRF and SAXS experiments. Consequently, such a lens pair is all that is needed for building simple synchrotron radiation beamlines for special x-ray experiments.

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Section: Theoreticalmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

A simple x‐ray monochromator based on an alligator lens

Jark

2004

X-Ray Spectrometry

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“…Synchrotron X-ray radiography was used to test a region centered in the middle height of the cell covering an area of ~10% of the total active area (Alink et al, 2013). The measurements were performed at the imaging beamline "BAMline" at the synchrotron electron storage ring Bessy II in Berlin, Germany (Görner et al, 2001). A field of view of 8.8×5.9 mm, and pixel sizes of 2.2×2.2 μm were used .…”

Section: Methodsmentioning

confidence: 99%

Investigation of Water Transport in Newly Developed Micro Porous Layers for Polymer Electrolyte Membrane Fuel Cells

Alrwashdeh

Markötter

Haubmann

et al. 2017

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“…The beamline was constructed and installed by ACCEL instruments GmbH as a second branch (40 mrad off-centre) of the 7 T wavelength-shifter at the third-generation synchrotron radiation source BESSY II, utilizing the optical hutch of the BAMline (Gorner et al, 2001). The accessible energy range is 1.9-30 keV, provided by a fixed exit double crystal monochromator with three sets of crystals (Si 111, Si 311 and Ge 111).…”

Section: Microfocus Beamlinementioning

confidence: 99%

A new experimental station for simultaneous X-ray microbeam scanning for small- and wide-angle scattering and fluorescence at BESSY II

et al. 2006

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A new instrument for simultaneous microbeam small-and wide-angle X-ray scattering and X-ray fluorescence (SAXS/WAXS/XRF) is presented. The instrument is installed at the microfocus beamline at BESSY II and provides a beam of 10 mm size with a flux of about 10 9 photons s À1. A SAXS resolution up to 500 Å d-spacing and a range of scattering vectors of almost three orders of magnitude are reached by using a large-area high-resolution CCD-based detector for simultaneous SAXS/WAXS. The instrument is particularly suited for scanning SAXS/WAXS/XRF experiments on hierarchically structured biological tissues. The necessary infrastructure, such as a cryo-stream facility and an on-site preparation laboratory for biological specimens, are available.

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BAMline: the first hard X-ray beamline at BESSY II

Cited by 195 publications

References 5 publications

A simple x‐ray monochromator based on an alligator lens

A simple x‐ray monochromator based on an alligator lens

Investigation of Water Transport in Newly Developed Micro Porous Layers for Polymer Electrolyte Membrane Fuel Cells

A new experimental station for simultaneous X-ray microbeam scanning for small- and wide-angle scattering and fluorescence at BESSY II

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