A5083366391- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Advanced X-ray Imaging Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Superconducting Materials and Applications
- Nuclear Physics and Applications
- Enzyme Structure and Function
- Advanced Electron Microscopy Techniques and Applications
- Crystallography and Radiation Phenomena
- High-pressure geophysics and materials
- X-ray Diffraction in Crystallography
- Ion-surface interactions and analysis
- Advancements in Photolithography Techniques
- Particle Detector Development and Performance
- Diamond and Carbon-based Materials Research
- Advanced X-ray and CT Imaging
- Electron and X-Ray Spectroscopy Techniques
- Photocathodes and Microchannel Plates
- Electromagnetic Simulation and Numerical Methods
- Magnetic Field Sensors Techniques
- Magnetic confinement fusion research
- Medical Imaging Techniques and Applications
- Microstructure and mechanical properties
- Cultural Heritage Materials Analysis
- Advanced Surface Polishing Techniques
European Synchrotron Radiation Facility
2009-2024
European Science Foundation
1996-2009
This article presents the main technical features and performance of upgraded beamline ID02 at ESRF. The combines different small-angle X-ray scattering techniques in one unique instrument, enabling static kinetic investigations from ångström to micrometre size scales time resolution down sub-millisecond range. component instrument is an evacuated detector tube length 34 m diameter 2 m. Several detectors are housed inside a motorized wagon that travels along rail system, allowing automated...
The new technical features and enhanced performance of the ID02 beamline with Extremely Brilliant Source (EBS) at ESRF are described. enables static kinetic investigations a broad range systems from ångström to micrometre size scales down sub-millisecond time by combining different small-angle X-ray scattering techniques in single instrument. In addition, nearly coherent beam obtained high-resolution mode allows multispeckle photon correlation spectroscopy measurements microsecond over...
The trend in synchrotron radiation (x-rays) is towards higher brilliance. This may lead to a very high power density, of the order hundreds watts per square millimetre at x-ray optical elements. These elements are, typically, windows, polarizers, filters and monochromators. preferred material for Bragg diffracting present silicon, which can be grown crystal perfection workable size as well rather easily processed required surface quality. allows built with sufficient degree lattice...
This contribution presents the main design features of upgraded beamline ID02 (TRUSAXS). The combines different small-angle X-ray scattering techniques in one unique instrument. key component this instrument is an evacuated (5×10−3 mbar) stainless steel detector tube length 34 m and diameter 2 m. Three detectors (Rayonix MX170, Pilatus 300K FReLoN 4M) are housed inside a motorized wagon which travels along rail system with very low parasitic lateral movements (± 0.3 mm). allows automatically...
The ID10 beamline of the SESAME (Synchrotron-light for Experimental Science and Applications in Middle East) synchrotron light source Jordan was inaugurated June 2023 is now open to scientific users. beamline, which designed installed within European Horizon 2020 project BEAmline Tomography at (BEATS), provides full-field X-ray radiography microtomography imaging with monochromatic or polychromatic X-rays up photon energies 100 keV. generated by a 2.9 T wavelength shifter variable gap,...
An improved crystal design for a Bonse-Hart ultra-small-angle scattering instrument is presented. Defects at the diffracting surfaces of conditioning crystals were found to be origin diffuse that enhances intensity in wings rocking curves by several orders magnitude. In order improve performance instrument, monolithic channel-cut replaced pairs separate polished and deeply etched crystals. These mounted on mechanical stage allows very precise parallel alignment within tiny fraction curve...
We present an application of the Talbot effect [Talbot et al., Philos. Mag. 11, 196 (1836)] to measure spatial coherence a synchrotron beam, as well influence optical elements on it. One advantage using this is that regions beams down 50 µm × are still analysable (in our case). This resolution allows analysing local degradation caused by small in investigated element, like windows or Bragg diffraction crystals with defects. A second independence results detector point spread function. method...
In order to correctly analyse high-resolution rocking curves of high-quality crystals, a special effort is needed estimate the systematic contributions coming from experimental setup. This article highlights main areas that require analytical treatment and presents results obtained using different approaches problem, as well some typical for silicon diamond crystals.
We describe the design and show first results of a large solid angle X-ray emission spectrometer that is optimized for energies between 1.5 keV 5.5 keV. The based on an array 11 cylindrically bent Johansson crystal analyzers arranged in non-dispersive Rowland circle geometry. smallest achievable energy bandwidth smaller than core hole lifetime broadening absorption edges this range. Energy scanning achieved using innovative design, maintaining conditions all crystals with only four motor...
Before the commissioning of SPring-8, in-vacuum hybrid undulator developed at SPring-8 had been brought to ESRF for first beam test in summer 1996. The purpose this was investigate influence on and check its vacuum system. However, heating by resistive wall impedance turned out be a critical issue undulators.
The European Synchrotron Radiation facility is presently operating 47 segments of insertion devices (IDs). A record brilliance 1 × 10 20 photons s −1 (0.1% bandwidth) mm −2 mrad has been reached. Almost all are built with permanent magnets or without iron pole pieces. They have mechanically and magnetically designed field-measured in house. Multipole shimming applied to remove the integrated dipole higher-order multipole fields, thereby reducing interaction between IDs stored beam. For...
A versatile instrument capable of high resolution X-ray optics characterization has been implemented at the ESRF. The Micro-Optics Test Bench (MOTB) is installed in EH2 BM5 and located 55 meters from tangent point a dipole magnet. Substantial gain demonstrated microfocusing imaging optical elements, including diffractive, refractive reflective optics.
A new helical undulator has been built with an hybrid electromagnet/permanent magnet technology and was recently coupled to the ESRF ID12A beamline which is dedicated polarization dependent X-ray absorption spectroscopy. This insertion device optimized produce high fluxes of circularly polarized photons in energy range 1.5 - 8 keV. It consists 19 magnetic periods length 80 mm a peak field about 0.2 T. With this undulator, it possible flip very rapidly helicity emitted radiation by reversing...
Abstract Spatially resolved EXAFS measurements were performed using micrometer‐size x‐ray beam produced by achromatic Kirkpatrick‐Baez (KB) optical system. The KB mirrors coated with aperiodic multilayers to increase the collection angle as compared a total reflection mirror and provide an energy bandpass (Δ E / ∼ 15%) sufficient acquire spectrum without having adjust during data acquisition. A series of at various absorption edges including Fe Pt ESRF synchrotron bending‐magnet beamlines...
After 4 years of user operation, the ESRF is operating 44 segments Insertion Devices serving 25 beamlines. Recent developments in technology are discussed such as design passive phasing sections for both pure permanent magnet and hybrid type undulator. A novel a short period variable polarization helical undulator presented. It made magnets coils. will cover photon energy range from 1 to 15 keV with flipping time few milliseconds between left right circular polarization. Finally, some...
The ESRF - the European Synchrotron Radiation Facility is a user facility in Grenoble, France, and source of intense high-energy (6 GeV) X-rays. In 2019, existing storage ring will be removed new lattice installed its place, dramatically reducing equilibrium horizontal emittance. This 'fourth-generation' synchrotron produce an X-ray beam 100 times more brilliant coherent than today. Extremely Brilliant Source (EBS) project was launched 2015 now well underway, on track for scheduled...
This paper reviews two typical cases of permanent magnet demagnetization which have occurred during the seven years X-ray beam delivery at ESRF. The first case ESRF commissioning and was due to a miss-steered electron beam. second seen over long period routinely produced radiation (i.e. X-rays, associated with parasitic radiation). process is illustrated an experiment where various grades magnets been voluntarily irradiated in order study their susceptibility.
Crystal collimation offers a viable alternative to the commonly used pinhole in small-angle X-ray scattering (SAXS) for specific applications requiring highest angular resolution. This scheme is not affected by parasitic and diffraction-limited beam broadening. The Darwin width of rocking curve crystals mainly defines ultimate divergence. For this purpose, dispersive Si-111 crystal set-up based on two well conditioned pseudo channel-cut (pairs polished, independent parallel crystals) using...
The field integral tolerances required on third generation synchrotron sources are of the order 10-20 Gcm in whole gap range an insertion device. This can be achieved without electromagnet correction by a proper magnetic design termination. paper describes several such end terminations to used for planar undulators. A new termination valid APPLE II undulator is presented which produces variation smaller than 20 any useful setting and phase. It compares quite favorably with other known type...