Multi-segmented piezoelectric mirrors as active/adaptive optics components

Signorato, Riccardo; Hignette, O.; Goulon, J.

doi:10.1107/s0909049597012843

Cited by 98 publications

(59 citation statements)

References 5 publications

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“…Many iterative scans are necessary for the completion of the inspection of this method, so that we implemented the scanning procedure on our beamline control system. Estimation of optimum voltage on each piezoelectric actuator is performed by the Inverse Matrix method [7,8,9]. Figure 3 shows the results of the optimization on each focal point.…”

Section: Beam Optimization At Each Focal Pointmentioning

confidence: 99%

Newly designed double surface bimorph mirror for BL-15A of the photon factory

Igarashi¹,

Nitani²,

Takeichi³

et al. 2016

AIP Conference Proceedings

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Section: Beam Optimization At Each Focal Pointmentioning

confidence: 99%

Newly designed double surface bimorph mirror for BL-15A of the photon factory

Igarashi¹,

Nitani²,

Takeichi³

et al. 2016

AIP Conference Proceedings

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“…Then, a set of horizontal and vertical standard ESRF secondary slits cleans up the beam from the scattered photons coming from HDM1 and defines the angular acceptance for the following OE: a fixed exit double crystal monochromator (manufactured by KoHzu Seiki Co. -Japan). (Susini & al., 1995;Signorato & al., 1998a;Signorato, 1998b). They both have a fused silica reflecting surface, with two metallic strips (Cr and Pt) to enhance reflectivity at medium/high energy, respectively.…”

Section: Focusing Optics Sectionmentioning

confidence: 99%

Performance of the ESRF ID26 beamline reflective optics

Signorato¹,

Solé²,

Gauthier³

1999

J Synchrotron Rad

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This paper presents the experimental results obtained during the commissioning of the X-ray mirrors installed on the ESRF beamline ID26. The ID26 spectrometer is dedicated to XAFS studies on ultra-diluted samples in the energy range 2.3 -25 KeV using the excitation of X-ray fluorescence. The beamiine has been open to external users since January 1998 and all the main optical elements are fully commissioned. The reflective optics layout consists of three devices: a high heat load deflecting mirror installed in the white beam section and a classical KirkpatrickBaez couple installed downstream the monochromator. The focusing mirrors are based on the multi-segmented piezoelectric mirror technology and allow for a continuos and very precise adjustment of the curvature. Spot sizes as small as 170 x 7 (hor. x vert) lam 2 FWHM can be easily achieved, with a total flux well in excess of 10 ]3 photons s l when using Si 220 monochromator crystals.

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“…The full X-ray beam is focused by a pair of 'bimorph' mirrors (Signorato et al, 1998;Fischetti et al, 2007) arranged in a Kirkpatrick-Baez geometry. The beam can be focused at the sample position or downstream of the sample to provide a more parallel beam for recording diffraction from crystals with large unit cells.…”

Section: Alignment On the Beamlinementioning

confidence: 99%

Mini-beam collimator enables microcrystallography experiments on standard beamlines

Fischetti

Yoder

et al. 2009

J Synchrotron Radiat

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The high-brilliance X-ray beams from undulator sources at third-generation synchrotron facilities are excellent tools for solving crystal structures of important and challenging biological macromolecules and complexes. However, many of the most important structural targets yield crystals that are too small or too inhomogeneous for a 'standard' beam from an undulator source, $ 25-50 mm (FWHM) in the vertical and 50-100 mm in the horizontal direction. Although many synchrotron facilities have microfocus beamlines for other applications, this capability for macromolecular crystallography was pioneered at ID-13 of the ESRF. The National Institute of General Medical Sciences and National Cancer Institute Collaborative Access Team (GM/CA-CAT) dual canted undulator beamlines at the APS deliver high-intensity focused beams with a minimum focal size of 20 mm Â 65 mm at the sample position. To meet growing user demand for beams to study samples of 10 mm or less, a 'mini-beam' apparatus was developed that conditions the focused beam to either 5 mm or 10 mm (FWHM) diameter with high intensity. The mini-beam has a symmetric Gaussian shape in both the horizontal and vertical directions, and reduces the vertical divergence of the focused beam by 25%. Significant reduction in background was achieved by implementation of both forward-and back-scatter guards. A unique triple-collimator apparatus, which has been in routine use on both undulator beamlines since February 2008, allows users to rapidly interchange the focused beam and conditioned mini-beams of two sizes with a single mouse click. The device and the beam are stable over many hours of routine operation. The rapid-exchange capability has greatly facilitated sample screening and resulted in several structures that could not have been obtained with the larger focused beam.

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Multi-segmented piezoelectric mirrors as active/adaptive optics components

Cited by 98 publications

References 5 publications

Newly designed double surface bimorph mirror for BL-15A of the photon factory

Newly designed double surface bimorph mirror for BL-15A of the photon factory

Performance of the ESRF ID26 beamline reflective optics

Mini-beam collimator enables microcrystallography experiments on standard beamlines

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