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双晶单色器是同步辐射光源光束线上的关键设备之一,其通过内部的第一晶体与第二晶体获得实验所需的单一波长的谱线,故晶体的装配安装直接影响实验站同步辐射光的品质。通过实验测试结合有限元分析的方法,建立单色器第一晶体在一定的螺栓紧固力下的有限元分析模型,验证模型的有效性,进而分析晶体的面形精度、安装机构的应力分布、“O”圈的形变等指标,研究安装过程中一晶及其安装机构的受力情况与力学响应,为高面形精度晶体的安装提供指导与借鉴。
Double-crystal monochromator is one of the key devices in the synchrotron radiation beamline, which obtains the single-wavelength spectrum required by the experiment through the first crystal and the second crystal in the interior. Therefore, the assembly and installation of the crystal directly affects the synchronization of the experimental station Radiant light quality. Through the experimental test combined with the finite element analysis, the finite element analysis model of the first monochromator under a certain bolt tightening force is established to verify the validity of the model, and then the surface shape accuracy of the crystal, the stress distribution of the mounting mechanism , “O” ring deformation and other indicators to study the installation of a crystal and its mounting mechanism force and mechanical response for the installation of high-profile precision crystal provide guidance and reference.