Advanced photon source undulator beamline tests of a contact-cooled silicon u-shaped monochromator

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At the Advanced Photon Source (APS), undulator insertion devices are capable of producing x-ray beams with total power of about 5 kW and normal incidence heat fluxes of about 170 W/mm{sup 2} at 30 m from the source. On beamlines in which the first optical element is a mirror, the reflected beam from the mirror still carries considerable power and power density. Depending on its location, the monochromator downstream of the mirror might be subject to 300 W total power and 5 W/mm{sup 2} normal incidence heat flux. Thus, it is still necessary to carefully design a monochromator that provides ... continued below

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19 p.

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Lee, W.K.; Fernandez, P.B. & Khounsary, A. September 1, 1997.

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Description

At the Advanced Photon Source (APS), undulator insertion devices are capable of producing x-ray beams with total power of about 5 kW and normal incidence heat fluxes of about 170 W/mm{sup 2} at 30 m from the source. On beamlines in which the first optical element is a mirror, the reflected beam from the mirror still carries considerable power and power density. Depending on its location, the monochromator downstream of the mirror might be subject to 300 W total power and 5 W/mm{sup 2} normal incidence heat flux. Thus, it is still necessary to carefully design a monochromator that provides acceptable performance under these heat loads. A contact-cooled u-shaped monochromator may be used in this case. The main feature of the u-shaped monochromator is that, by carefully selecting the geometry and cooling locations, is passively corrects for some of the thermally induced crystal distortions. We present experimental and computational results of a contact cooled u-shaped monochromator tested on an APS undulator beamline. The results are encouraging and compare favorably with liquid-gallium internally cooled crystals.

Physical Description

19 p.

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OSTI as DE98000352

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  • Annual meeting of the Society of Photo-Optical Instrumentation Engineers, San Diego, CA (United States), 27 Jul - 1 Aug 1997

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  • Other: DE98000352
  • Report No.: ANL/XFD/CP--92493
  • Report No.: CONF-970706--
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 539861
  • Archival Resource Key: ark:/67531/metadc690323

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • September 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Dec. 16, 2015, 10:41 a.m.

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Lee, W.K.; Fernandez, P.B. & Khounsary, A. Advanced photon source undulator beamline tests of a contact-cooled silicon u-shaped monochromator, article, September 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc690323/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.