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

HU Wen; XIE Hong-Lan; DU Guo-Hao; XIAO Ti-Qiao

Chinese Physics C> 2007, Vol. 31> Issue(6) : 597-601

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

Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, CAS, Shanghai 201800, China

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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.

References

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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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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 2006-09-27

Accepted Date: 2006-11-21

Available Online: 2007-06-05

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

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