Monochromators for small cross-section x-ray beams from high heat flux synchrotron sources

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For some x-ray experiments, only a fraction of the intense central cone of x-rays generated by high-power undulator sources can be used; the x-ray source emittance is larger than the useful emittance for the experiment. For example with microfocusing optics, or for coherence experiments, x-ray beams with cross sections less than 0.1 mm{sup 2} are desirable. With such small beams, the total thermal load is small even though the heat flux density is high. Analyses indicate that under these conditions, rather simple crystal cooling techniques can be used. We illustrate the advantages of a small beam monochromator, with a simple ... continued below

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12 p.

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Ice, G.; Riemer, B. & Khounsary, A. October 1996.

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For some x-ray experiments, only a fraction of the intense central cone of x-rays generated by high-power undulator sources can be used; the x-ray source emittance is larger than the useful emittance for the experiment. For example with microfocusing optics, or for coherence experiments, x-ray beams with cross sections less than 0.1 mm{sup 2} are desirable. With such small beams, the total thermal load is small even though the heat flux density is high. Analyses indicate that under these conditions, rather simple crystal cooling techniques can be used. We illustrate the advantages of a small beam monochromator, with a simple x-ray monochromator optimized for x-ray microdiffraction. This monochromator is designed to achieve negligible distortion when subjected to a narrow (0.1 mm wide) beam from an APS undulator operating at 100 mA. It also allows for rapid and repeatable energy scans and rapid cycling between monochromatic and white beam conditions.

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12 p.

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OSTI as DE96014697

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  • Denver `96: 1. conference on space processing of materials, at SPIE International Society for Optical Engineering (SPIE) annual international symposium on optical science, engineering, and instrumentation, Denver, CO (United States), 4-9 Aug 1996

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  • Other: DE96014697
  • Report No.: CONF-960848--13
  • Grant Number: AC05-96OR22464;W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 397105
  • Archival Resource Key: ark:/67531/metadc682782

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  • October 1996

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 16, 2015, 12:58 p.m.

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Ice, G.; Riemer, B. & Khounsary, A. Monochromators for small cross-section x-ray beams from high heat flux synchrotron sources, article, October 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc682782/: accessed November 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.