The multi-purpose hard X-ray beamline BL10 at the DELTA storage ring

Abstract

The layout and the characteristics of the hard X-ray beamline BL10 at the superconducting asymmetric wiggler at the 1.5 GeV Dortmund Electron Accelerator DELTA are described. This beamline is equipped with a Si(111) channel-cut monochromator and is dedicated to X-ray studies in the spectral range from ∼4 keV to ∼16 keV photon energy. There are two different endstations available. While X-ray absorption studies in different detection modes (transmission, fluorescence, reflectivity) can be performed on a designated table, a six-axis kappa diffractometer is installed for X-ray scattering and reflectivity experiments. Different detector set-ups are integrated into the beamline control software, i.e. gas-filled ionization chambers, different photodiodes, as well as a Pilatus 2D-detector are permanently available. The performance of the beamline is illustrated by high-quality X-ray absorption spectra from several reference compounds. First applications include temperature-dependent EXAFS experiments from liquid-nitrogen temperature in a bath cryostat up to ∼660 K by using a dedicated furnace. Besides transmission measurements, fluorescence detection for dilute sample systems as well as surface-sensitive reflection-mode experiments are presented.

Environment of the Eu3+ Ion within Nanocrystalline Eu-Doped BaAl2O4: Correlation of X-ray Diffraction, Mössbauer Spectroscopy, X-ray Absorption Spectroscopy, and Photoluminescence Investigations

“…28 XANES and EXAFS measurements were performed on the hard X-ray Beamline BL10 at the superconducting asymmetric wiggler at the 1.5 GeV Dortmund Electron Accelerator DELTA, equipped with a channel-cut Si(111) monochromator. 29 Some of the samples were also measured at the Materials Science Endstation of the Rossendorf Beamline (BM20) at the European Synchrotron Radiation Facility (ESRF) in Grenoble, France, under dedicated ring-operating conditions (6 GeV and 130−200 mA), 30 as well as at the SuperXAS Beamline X10DA at the Swiss Light Source (SLS). 31 Transmissionand fluorescence-mode data were collected using gas-filled ionization chambers as detectors for the incident and transmitted X-rays and a silicon drift diode (SDD) with a multichannel analyzer for fluorescence radiation.…”

Design of weak link channel-cut crystals for fast QEXAFS monochromators

“…First measurements with the manufactured Si(111) weak link channel-cut crystal were performed at beamline 10 at the DELTA synchrotron radiation facility (Dortmund, Germany) [5]. A schematical layout of the experiment is shown in Figure 3.…”

Structural Behavior and Spin-State Features of BaAl2O4 Scaled through Tuned Co3+ Doping

“…The Co XANES along with the EXAFS experiments were carried out at beamline 10 of the DELTA synchrotron (Dortmund, Germany), operating with ca. 100–130 mA of stored 1.5 GeV electrons and using a Si(111) channel-cut monochromator . A N 2 -gas-filled ionization chamber was used for the incident intensities, while an Ar-filled ionization chamber was used for the beam transmitted through the fine-powdered samples.…”

“…100−130 mA of stored 1.5 GeV electrons and using a Si(111) channel-cut monochromator. 65 A N 2 -gas-filled ionization chamber was used for the incident intensities, while an Ar-filled ionization chamber was used for the beam transmitted through the finepowdered samples. The bulk sensitive fluorescence yield in XANES measurements was detected by a silicon drift diode with a multichannel analyzer and a large-area passivated implanted planar silicon (PIPS) detector.…”