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Title: An X-ray Focusing System Combining a Sagittally-bent Crystal and a Kirkpatrick-Baez System

Abstract

In the production of x-ray microbeams a trade-off between flux and beam size must often be made, particularly when using a bending magnet synchrotron source since the radiation emitted in the horizontal direction is not collimated. To circumvent this problem we have combined the diffraction from a sagitally-bent crystal with the meridional focusing of a Kirkpatrick-Baez (KB) system composed of two reflective surfaces coated with a platinum layer (1st mirror, vertical deflection) and with a Ni/B4C multilayer (2nd mirror, horizontal deflection). The experiments were performed at the ESRF BM5 beamline, for which the most favorable arrangement consisted of illuminating a KB system located faraway from the source with a horizontally converging or diverging beam produced by a sagittally-bent crystal located closer to the source. The 1st mirror demagnified the vertical dimension of the source whilst the 2nd further decreased the beam in the horizontal direction. Several flux/ spot-size configurations were tested by changing the position of the image of the sagittal crystal. The best (preliminary) results gave a focus of 2.6 {mu}m (vertical) x 6.8 {mu}m (horizontal) and an irradiance gain of 2.6 104. These figures were limited by the aberrations of the sagittally-bent crystal.

Authors:
; ;  [1]
  1. European Synchrotron Radiation Facility, BP 220, 38043 Grenoble cedex (France)
Publication Date:
OSTI Identifier:
20653064
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 705; Journal Issue: 1; Conference: 8. international conference on synchrotron radiation instrumentation, San Francisco, CA (United States), 25-29 Aug 2003; Other Information: DOI: 10.1063/1.1757909; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM OPTICS; BEAM POSITION; BENDING; CONTROL; CRYSTALS; DIFFRACTION; EMISSION; EUROPEAN SYNCHROTRON RADIATION FACILITY; FOCUSING; IMAGES; MAGNETS; MIRRORS; PLATINUM; SURFACES; SYNCHROTRON RADIATION; X RADIATION

Citation Formats

Ziegler, E, Bigault, T, and Hoszowska, J. An X-ray Focusing System Combining a Sagittally-bent Crystal and a Kirkpatrick-Baez System. United States: N. p., 2004. Web. doi:10.1063/1.1757909.
Ziegler, E, Bigault, T, & Hoszowska, J. An X-ray Focusing System Combining a Sagittally-bent Crystal and a Kirkpatrick-Baez System. United States. doi:10.1063/1.1757909.
Ziegler, E, Bigault, T, and Hoszowska, J. Wed . "An X-ray Focusing System Combining a Sagittally-bent Crystal and a Kirkpatrick-Baez System". United States. doi:10.1063/1.1757909.
@article{osti_20653064,
title = {An X-ray Focusing System Combining a Sagittally-bent Crystal and a Kirkpatrick-Baez System},
author = {Ziegler, E and Bigault, T and Hoszowska, J},
abstractNote = {In the production of x-ray microbeams a trade-off between flux and beam size must often be made, particularly when using a bending magnet synchrotron source since the radiation emitted in the horizontal direction is not collimated. To circumvent this problem we have combined the diffraction from a sagitally-bent crystal with the meridional focusing of a Kirkpatrick-Baez (KB) system composed of two reflective surfaces coated with a platinum layer (1st mirror, vertical deflection) and with a Ni/B4C multilayer (2nd mirror, horizontal deflection). The experiments were performed at the ESRF BM5 beamline, for which the most favorable arrangement consisted of illuminating a KB system located faraway from the source with a horizontally converging or diverging beam produced by a sagittally-bent crystal located closer to the source. The 1st mirror demagnified the vertical dimension of the source whilst the 2nd further decreased the beam in the horizontal direction. Several flux/ spot-size configurations were tested by changing the position of the image of the sagittal crystal. The best (preliminary) results gave a focus of 2.6 {mu}m (vertical) x 6.8 {mu}m (horizontal) and an irradiance gain of 2.6 104. These figures were limited by the aberrations of the sagittally-bent crystal.},
doi = {10.1063/1.1757909},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 705,
place = {United States},
year = {2004},
month = {5}
}