Performance of a high-resolution x-ray microprobe at the Advanced Photon Source.

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The authors have developed a x-ray microprobe in the energy region from 6 to 20 keV using undulator radiation and zone-plate optics for microfocusing-based techniques and applications at a beamline at the Advanced Photon Source (APS). The performance of the beamline was shown to meet the design objectives, including preservation of the source brilliance and coherence, selectable transverse coherence length and energy bandwidth, high angular stability, and harmonic suppression of the beam. These objectives were achieved by careful thermal management and use of a novel mirror and crystal monochromator cooling geometry. All beamline optical components are water cooled, and the ... continued below

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6 p.

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Cai, Z.; Lai, B.; Yun, W.; McNulty, I.; Khounsary, A.; Maser, J. et al. December 20, 1999.

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Description

The authors have developed a x-ray microprobe in the energy region from 6 to 20 keV using undulator radiation and zone-plate optics for microfocusing-based techniques and applications at a beamline at the Advanced Photon Source (APS). The performance of the beamline was shown to meet the design objectives, including preservation of the source brilliance and coherence, selectable transverse coherence length and energy bandwidth, high angular stability, and harmonic suppression of the beam. These objectives were achieved by careful thermal management and use of a novel mirror and crystal monochromator cooling geometry. All beamline optical components are water cooled, and the x-ray beam in the experiment station is stable in beam intensity, energy, and position over many days with no active feedback. Using a double-crystal Si(111) monochromator, they have obtained a focal spot size (FWHM) of 0.15 {micro}m (v) x 1.0 {micro}m (h), and a photon flux of 4 x 10{sup 9} photons/sec at the focal spot, and thus a photon flux density gain of 15,000. A circular beam spot of 0.15 {micro}m in diameter can be achieved by reducing the horizontal source size using a white beam slit located 43.5 meters upstream of the zone plate, with an order of magnitude less flux in the focal spot.

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6 p.

Notes

INIS; OSTI as DE00750482

Medium: P; Size: 6 pages

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  • 11th U. S. National Synchrotron Radiation Instrumentation Conference (SRI '99), Stanford, CA (US), 10/13/1999--10/15/1999

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  • Report No.: ANL/XFD/CP-99531
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 750482
  • Archival Resource Key: ark:/67531/metadc703056

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 20, 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 11, 2017, 1:23 p.m.

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Cai, Z.; Lai, B.; Yun, W.; McNulty, I.; Khounsary, A.; Maser, J. et al. Performance of a high-resolution x-ray microprobe at the Advanced Photon Source., article, December 20, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc703056/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.