Nuclear Techniques ›› 2018, Vol. 41 ›› Issue (1): 10101-010101.doi: 10.11889/j.0253-3219.2018.hjs.41.010101


The finite element analysis of the bent elliptical cylindrical mirror

QIN Chao1,2, XUE Song1, WANG Nan1, SUN Xiaopei1, ZHU Wanqian1   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Zhangjiang Campus, Shanghai 201204, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-08-24 Revised:2017-10-16 Online:2018-01-10 Published:2018-01-06

Abstract: Background: Bent elliptically cylindrical mirror is required for some beam lines of the 2nd phase of Shanghai synchrotron radiation facility (SSRF). A double rod bending mechanism has been developed accordingly. Purpose: This paper aims to bend an elliptical cylindrical mirror we need by using this mechanism. Methods: Theoretical calculation and analysis combined with finite element analysis were carried out on this mechanism. Results: In horizontal focusing, when the displacements of the rod were 9.2 mm and 10.1 mm, the slope error was 0.35 μrad. In vertical focusing, if not using the gravity compensation mechanism, the slope error was 0.88 μrad when the displacements of the rod were 7.4 mm and 8.4 mm, so the gravity compensation mechanism is necessary, and now when the displacements of the rod were 9.1 mm and 10.1 mm, the slope error was 0.45 μrad. Conclusion: The results can meet our requirements, and this analysis result is useful for the engineering application.

Key words: Bending, Elliptically cylindrical, Finite element analysis, Surface-shape error

CLC Number: 

  • TL503.4