Double Laue-Crystal Monochromator for an X-Ray Imaging Beamline with Synchrotron Radiation

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HU Wen, XIE Hong-Lan, DU Guo-Hao and XIAO Ti-Qiao. Double Laue-Crystal Monochromator for an X-Ray Imaging Beamline with Synchrotron Radiation[J]. Chinese Physics C, 2007, 31(6): 597-601.
HU Wen, XIE Hong-Lan, DU Guo-Hao and XIAO Ti-Qiao. Double Laue-Crystal Monochromator for an X-Ray Imaging Beamline with Synchrotron Radiation[J]. Chinese Physics C, 2007, 31(6): 597-601. shu
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Received: 2006-09-27
Revised: 2006-11-21
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Double Laue-Crystal Monochromator for an X-Ray Imaging Beamline with Synchrotron Radiation

    Corresponding author: HU Wen,
  • Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, CAS, Shanghai 201800, China

Abstract: A new optical configuration of monochromator for X-ray imaging beamline, which allows one to obtain a parallel monochromatic beam with fixed exit by using two asymmetrically cut bent-crystals in Laue geometry, has been proposed. Based on the W14 multi-pole wiggler at SSRF, a preliminary design for the monochromator has been presented. The tunable photon energy range is 19—120keV, the flux output and flux density is 1.9×1013phs/s@33keV and 3.8×1010phs/s/mm2@33keV respectively. The flux and energy resolution of the monochromator is estimated, which indicates that the heat-load is tolerable and the design meets the demands of the X-ray imaging experiments. The results show that the new configuration of monochromator, compared with traditional design in double flat-crystal, is more powerful in dealing with the high flux and high heat-load.

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