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《Optics and Precision Engineering》 2007-02
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A mechanical linkage of double crystal X-ray monochromator for synchrotron radiation

DONG Xiao-hao,FENG Liang-jie,KANG Le,XU Chao-yin(National Synchrotron Radiation Laboratory,University of Science & Technology of China,Hefei 230029,China)  
A novel mechanism for the fixed-exit double crystal monochromator of Bragg-Bragg diffraction case used widely in synchrotron radiation was presented.The development of double crystal monochromator for synchrotron radiation X-ray was reviewed briefly,especially of the fixed-exit mode.Several kinds of implementation approaches for the energy scanning of the photons were summarized by analyzing the common mechanical linkage schemes.Based on the principle of mechanism with rotation plate coupling motions on fixed cams as well as right-angle linkage device,the L-shaped mechanical linkage used in successfully the double crystal monochromator of X-ray beamlines at National Synchrotron Radiation Laboratory(NSRL) was introduced in detail.It adopted the advantages of the above right-angle and motion coupling mechanism to operate the mechanical linkage in simple configurations and motions.Motion mechanism and position adjustment of the crystals,mechanical design of the related structure,and the incoming improvement were discussed,It is indicated that the mechanical linkage is suit for the experimental researches at 3.1~12.4 keV by off-line testing of the mechanism and on-line measurement of the monochromators.
【Fund】: 国家自然科学基金(No.10575098)
【CateGory Index】: TH744.1
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