Mechanical aspects of the ID26 emission spectrometer II: improving stability for a large instrument by the use of multiple air pad supports

2010 ◽  
Vol 1 (MEDSI-6) ◽  
Author(s):  
L. Ducotté ◽  
P. Glatzel ◽  
P. Marion ◽  
C. Lapras ◽  
M. Lesourd ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Vertical Plane ◽  
Vertical Axis ◽  
High Energy ◽  
Perfect Crystal ◽  
European Synchrotron Radiation Facility ◽  
High Energy Resolution ◽  
X Ray ◽  
Radiation Sources ◽  
Almost All

An instrument for X-ray emission spectroscopy (XES) based on perfect crystal Bragg optics was recently commissioned at beam line ID26 of the ESRF (European Synchrotron Radiation Facility). The spectrometer is used to record high-energy resolution fluorescence-detected X-ray absorption spectra with sub-lifetime resolution and to perform resonant and non-resonant XES. The hard X-ray probe is material bulk sensitive and allows demanding sample environments (in situ chemistry, high pressure, etc.). Spectrometers for XES are being installed or designed at almost all upcoming synchrotron radiation sources worldwide. The particularity of the ID26 spectrometer is to accommodate five analyser crystals with exact Rowland tracking in the vertical plane and with crystals radii between 0.5 and 2 m.The main upgrade of the new version of this large instrument (3 tonnes, overall size 2.5 m and height 3 m) is to allow the change of the scattering angle over the range 0–180°. This involves rotating the entire spectrometer around a vertical axis that passes through the sample. In order to optimize the vibration stability of the spectrometer's structure, we chose to support the structure in multiple points and not only on three (kinematic mount) like it is specified to do with air pads. According to this choice, we have developed special foot holders for air pads.The calculations during the design phase have shown that we can obtain a first modal frequency of the spectrometer's structure at more than 30 Hz. To confirm our predictive calculations, we have performed some vibration measurements.

A Johann-type X-ray emission spectrometer at the Rossendorf beamline

2016 ◽  
Vol 23 (3) ◽  
pp. 836-841 ◽  
Author(s):  
Kristina O. Kvashnina ◽  
Andreas C. Scheinost
Keyword(s):  
Atmospheric Pressure ◽  
Environmental Samples ◽  
Avalanche Photodiode ◽  
High Energy ◽  
European Synchrotron Radiation Facility ◽  
High Energy Resolution ◽  
X Ray ◽  
Bent Crystal ◽  
Crystal Analyzer ◽  
X Ray Absorption

This paper gives a detailed description, including equations, of the Johann-type X-ray emission spectrometer which has been recently installed and tested at the Rossendorf beamline (ROBL) of the European Synchrotron Radiation Facility. The spectrometer consists of a single spherically bent crystal analyzer and an avalanche photodiode detector positioned on the vertical Rowland cycle of 1 m diameter. The hard X-ray emission spectrometer (∼3.5–25 keV) operates at atmospheric pressure and covers the Bragg angles of 65°–89°. The instrument has been tested at high and intermediate incident energies,i.e.at the ZrK-edge and at the AuL3-edge, in the second experimental hutch of ROBL. The spectrometer is dedicated for studying actinides in materials and environmental samples by high-energy-resolution X-ray absorption and X-ray emission spectroscopies.

Theoretical consideration of an X-ray Bragg-reflection lens using the eikonal approximation

2014 ◽  
Vol 21 (4) ◽  
pp. 700-707
Author(s):  
Minas K. Balyan
Keyword(s):  
Synchrotron Radiation ◽  
Free Electron ◽  
Theoretical Consideration ◽  
Bragg Reflection ◽  
Eikonal Approximation ◽  
Perfect Crystal ◽  
Free Electron Lasers ◽  
X Ray ◽  
Radiation Sources ◽  
Focus Spot

On the basis of the eikonal approximation, X-ray Bragg-case focusing by a perfect crystal with parabolic-shaped entrance surface is considered theoretically. Expressions for focal distances, intensity gain and distribution around the focus spot as well as for the focus spot sizes are obtained. The condition of point focusing is presented. The experiment can be performed using X-ray synchrotron radiation sources (particularly free-electron lasers).

Monte Carlo simulations for XIDer, a novel digital integration X-ray detector for the next generation of synchrotron radiation sources

2022 ◽  
Vol 17 (01) ◽  
pp. C01037
Author(s):  
M. Collonge ◽  
P. Busca ◽  
P. Fajardo ◽  
M. Williams
Keyword(s):  
Monte Carlo ◽  
Synchrotron Radiation ◽  
High Energy ◽  
Design Parameters ◽  
Next Generation ◽  
X Ray ◽  
Digital Integration ◽  
Radiation Sources ◽  
Simulation Results ◽  
Readout Scheme

Abstract This work presents the first simulation results of the incremental digital integration readout, a charge-integrating front-end scheme with in-pixel digitisation and accumulation. This novel readout concept is at the core of the XIDer (X-ray Integrating Detector) project, which aims to design 2D pixelated X-ray detectors optimised for high energy scattering and diffraction applications for the next generation of synchrotron radiation sources such as the ESRF Extremely Brilliant Source (EBS). The digital integration readout and the XIDer detector open the possibilities for high-duty-cycle operation under very high photon flux, fast frame-rate and high dynamic range with single-photon sensitivity in the 30–100 keV energy range. The readout method allows for noise-free effective X-ray detection. The digital integration concept is currently under investigation to evaluate the impact of main critical design parameters to identify the strengths and weaknesses of the readout scheme and consequently to propose refinements in the final implementation. Simulations have been performed with a dedicated Monte Carlo simulation tool, X-DECIMO, a modular Python package designed to recreate the complete detection chain of X-ray detectors for synchrotron radiation experiments. Losses and non-linearities of the readout scheme are simulated and quantified. In addition to presenting simulation results for this novel readout scheme, this work underlines the potential of the approach and some of its limitations.

Performance of a high‐energy‐resolution, tender x‐ray synchrotron radiation beamline (invited)

1989 ◽  
Vol 60 (7) ◽  
pp. 1603-1607 ◽  
Author(s):  
P. L. Cowan ◽  
S. Brennan ◽  
T. Jach ◽  
D. W. Lindle ◽  
B. A. Karlin
Keyword(s):  
Synchrotron Radiation ◽  
Energy Resolution ◽  
High Energy ◽  
High Energy Resolution ◽  
X Ray

Synchrotron Radiation X-Ray Fluorescence Analysis with a Crystal Spectrometer

1991 ◽  
Vol 35 (B) ◽  
pp. 1027-1033 ◽  
Author(s):  
Kazutaka Ohashi ◽  
Mamoru Takahashl ◽  
Yohichi Gohshi ◽  
Atsuo Iida ◽  
Shunji Eishimoto
Keyword(s):  
Synchrotron Radiation ◽  
High Efficiency ◽  
Fluorescence Analysis ◽  
High Energy ◽  
Small Samples ◽  
High Energy Resolution ◽  
Present System ◽  
High Brightness ◽  
X Ray ◽  
Position Sensitive

AbstractA wavelength dispersive spectrometer which consists of a flat crystal analyser and a position sensitive proportional counter has been developed for X-ray fluorescence analysis using synchrotron radiation. The advantages of this spectrometer are high energy resolution, multielemental nature, and high efficiency, and these match well "with the high brightness synchrotron X-ray source. The minimum detection limits are of the order of ppm or pg. An application to elemental mapping has also been demonstrated. The present system is useful for practical analysis of small samples or small regions.

scholarly journals A high-energy-resolution resonant inelastic X-ray scattering spectrometer at ID20 of the European Synchrotron Radiation Facility

2018 ◽  
Vol 25 (2) ◽  
pp. 580-591 ◽  
Author(s):  
M. Moretti Sala ◽  
K. Martel ◽  
C. Henriquet ◽  
A. Al Zein ◽  
L. Simonelli ◽  
...  
Keyword(s):  
Energy Resolution ◽  
High Energy ◽  
Fluorescence Yield ◽  
European Synchrotron Radiation Facility ◽  
High Energy Resolution ◽  
Electronic Excitations ◽  
X Ray ◽  
X Ray Scattering ◽  
Electron Excitations ◽  
Ray Scattering

An end-station for resonant inelastic X-ray scattering and (resonant) X-ray emission spectroscopy at beamline ID20 of ESRF – The European Synchrotron is presented. The spectrometer hosts five crystal analysers in Rowland geometry for large solid angle collection and is mounted on a rotatable arm for scattering in both the horizontal and vertical planes. The spectrometer is optimized for high-energy-resolution applications, including partial fluorescence yield or high-energy-resolution fluorescence detected X-ray absorption spectroscopy and the study of elementary electronic excitations in solids. In addition, it can be used for non-resonant inelastic X-ray scattering measurements of valence electron excitations.

Monochromators for High-Energy Synchrotron Radiation

2001 ◽  
Vol 215 (11) ◽  
Author(s):  
P. Suortti ◽  
T. Buslaps ◽  
V. Honkimäki ◽  
M. Kretzschmer ◽  
M. Renier ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Permanent Magnet ◽  
Energy Band ◽  
High Energy ◽  
Energy Distributions ◽  
X Ray ◽  
Wavelength Shifter ◽  
X Ray Scattering ◽  
Radiation Sources ◽  
Ray Scattering

Several monochromators, which are based on the use of cylindrically bent perfect Si crystals, have been constructed at the High Energy X-ray Scattering beamlines of the ESRF. The monochromators provide different focusing conditions, and the energy band-passes are optimized for the needs of different experiments. Formulas are given for calculation of the focal distances, reflectivity curves, and energy distributions. The lay-out of the beamlines follows the Troika concept, where the radiation fan is either split in 3 beams, or the central beam is utilized successively by semi-transparent monochromators to serve three experimental stations simultaneously. The radiation sources are a 7-period permanent magnet asymmetric wiggler and a superconducting wavelength shifter. The critical energies are 45 keV and 96 keV, respectively. The lowest operation energy is 30 keV, and transmission type monochromators have been used up to 1 MeV photon energies. Typical X-ray flux at the sample is 10

X‐ray determination of the Debye temperature at high pressure using high‐energy synchrotron radiation

1990 ◽  
Vol 68 (6) ◽  
pp. 2719-2722 ◽  
Author(s):  
A. Matsumuro ◽  
M. Kobayashi ◽  
T. Kikegawa ◽  
M. Senoo
Keyword(s):  
High Pressure ◽  
Synchrotron Radiation ◽  
Debye Temperature ◽  
High Energy ◽  
X Ray
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