A variable-focus x-ray compound lens.

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Description

Design and fabrication of an x-ray lens assembly for focusing x-ray beams is described. The assembly consists of a number of precisely stacked and aligned aluminum parts. These parts are cut from a long extruded section having sixteen parabolic cavities along its length. The thickness of the wall between adjacent cavities is 0.2 mm. By cutting the assembled parts diagonally as shown below, a variable-focus lens system can be made. Moving the lens horizontally allows the incident beam to pass through fewer or more cavities, collimating or focusing the emerging beam at a desired distance downstream. The variable focus aluminum ... continued below

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6 pages

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Khounsary, A.; Shastri, S. D. & Macrander, A. October 29, 2002.

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Description

Design and fabrication of an x-ray lens assembly for focusing x-ray beams is described. The assembly consists of a number of precisely stacked and aligned aluminum parts. These parts are cut from a long extruded section having sixteen parabolic cavities along its length. The thickness of the wall between adjacent cavities is 0.2 mm. By cutting the assembled parts diagonally as shown below, a variable-focus lens system can be made. Moving the lens horizontally allows the incident beam to pass through fewer or more cavities, collimating or focusing the emerging beam at a desired distance downstream. The variable focus aluminum lens has been used at the Advanced Photon Source to collimate a monochromatic, 81 keV undulator beam to increase downstream crystal monochromator throughput. Results indicate collimation consistent with theoretical expectations.

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6 pages

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  • MEDSI02, Argonne, IL (US), 09/05/2002--09/06/2002

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  • Report No.: ANL/XFD/CP-108953
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 805257
  • Archival Resource Key: ark:/67531/metadc734443

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  • October 29, 2002

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • March 24, 2016, 3:37 p.m.

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Khounsary, A.; Shastri, S. D. & Macrander, A. A variable-focus x-ray compound lens., article, October 29, 2002; Illinois. (digital.library.unt.edu/ark:/67531/metadc734443/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.