Optical design of GILDA, the Italian bending magnet beam line at ESRF

Pascarelli, S.; Boscherini, Federico; Marcelli, A.; Mobilio, Settimio

doi:10.1063/1.1143782

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…The beamline consist of a series of three hutches: the optical hutch, a second hutch for X-ray absorption measurements (EXAFS, refl-EXAFS) and a diffraction hutch, for AXS and powder diffraction. A detailed description of the beamline can be found in [5][6][7]. The diffraction apparatus basically consists of a two circle (co-20) goniometer and a 16-elements solid state Si(Li) multidetector, that cover an angular range of 16%, which allows sixteen spectra to be simultaneously collected, improving the signal-to-noise ratio.…”

Section: Methodsmentioning

confidence: 99%

Anomalous X-Ray Scattering On Sr and Sr-Eu Metaphosphate Glasses

Bionducci¹,

Meneghini

Navarra³

et al. 1996

MRS Proc.

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The results of an Anomalous X-ray Scattering experiment performed on Sr(P0 3 ) 2 and Euo.ISr 0 . 9 (PO 3 ) 2 . 1 glasses are presented. These are the first measurements carried out on GILDA (General purpose Italian beamLine for Diffraction and Absorption) diffractometer, located at the European Synchrotron Radiation Facility (ESRF), Grenoble. To obtain detailed information about the local order on pure and Eu-doped Sr-metaphosphate glasses both samples were investigated near the Sr K-edge (16.107 KeV), while the latter was also studied near the Eu K-edge (48.517 KeV).

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Section: Methodsmentioning

confidence: 99%

Anomalous X-Ray Scattering On Sr and Sr-Eu Metaphosphate Glasses

Bionducci¹,

Meneghini

Navarra³

et al. 1996

MRS Proc.

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“…In this paper we describe the performance of a dynamically sagittally focusing monochromator, operational on the GILDA beamline at the ESRF (Pascarelli, Boscherini, Marcelli & Mobilio, 1992;Pascarelli et al, 1995). This beamline, which accepts a 3.6 mrad horizontal fan from a 20 keV critical-energy bending magnet, is optimized to perform XAFS and powder diffraction in the energy range 5-50 keV with an energy resolution in the 10-5-10 -4 range, using Si(311) and Si(511) crystals.…”

Section: Introductionmentioning

confidence: 99%

X-ray Optics of a Dynamical Sagittal-Focusing Monochromator on the GILDA Beamline at the ESRF

Pascarelli¹,

Boscherini²,

d’Acapito³

et al. 1996

J Synchrotron Radiat

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The performance of a dynamical sagittal-focusing monochromator for hard X-rays is described. It consists of a flat first crystal and a diamond-shaped ribbed second crystal which is clamped by its central rib and dynamically bent by applying a force on its two apices. The system has proved to perform very well on the GILDA beamline at the ESRF. The horizontal acceptance varies with energy and with focusing geometry as predicted theoretically; the total available horizontal fan of radiation (3.6 mrad) is in fact collected in the 1:3 geometry. The system is routinely run in a dynamical focusing mode for XAFS spectroscopy in the energy range 5-30 keV with Si(311) crystals, with a constant spot size FWHM ,-~1 mm on the sample and without degradation of energy resolution or reproducibility. Using simple geometrical considerations we calculate the variations of the horizontal profile of the reflected beam during rocking-curve scans in different focusing geometries and find them in agreement with observed ones. Not only is this is a practical aid in alignment but it illustrates the X-ray optics of sagittal focusing in an elegant way.

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