Finite Element Analysis of the Distortion of a Crystal Monochromator From Synchrotron Radiation Thermal Loading Metadata

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  • Main Title Finite Element Analysis of the Distortion of a Crystal Monochromator From Synchrotron Radiation Thermal Loading


  • Author: Edwards, W. R.
    Creator Type: Personal
  • Author: Hoyer, E. H.
    Creator Type: Personal
  • Author: Thompson, A. C.
    Creator Type: Personal


  • Name: Lawrence Berkeley Laboratory
    Place of Publication: California
    Additional Info: Lawrence Berkeley Lab., CA (USA)


  • Creation: 1985-10


  • English


  • Content Description: The first crystal of the Brown-Hower x-ray monochromator of the LBL-EXXON 54 pole wiggler beamline at Stanford Synchrotron Radiation Laboratory (SSRL) is subjected to intense synchrotron radiation. To provide an accurate thermal/structural analysis of the existing monochromator design, a finite element analysis (FEA) was performed. A very high and extremely localized heat flux is incident on the Si (220) crystal. The crystal, which possesses pronouncedly temperature-dependent orthotropic properties, in combination with the localized heat load, make the analysis ideally suited for finite element techniques. Characterization of the incident synchrotron radiation is discussed, followed by a review of the techniques employed in modeling the monochromator and its thermal/structural boundary conditions. The results of the finite element analysis, three-dimensional temperature distributions, surface displacements and slopes, and stresses, in the area of interest, are presented. Lastly, the effects these results have on monochromator output flux and resolution are examined.
  • Physical Description: Pages: 12


  • Keyword: Numerical Solution
  • Keyword: Elements
  • Keyword: X-Ray Spectroscopy
  • STI Subject Categories: 43 Particle Accelerators
  • Keyword: Monochromators
  • Keyword: Semimetals
  • Keyword: Radiation Sources
  • Keyword: Synchrotron Radiation Sources
  • Keyword: Spectroscopy 440300* -- Miscellaneous Instruments-- (-1989)
  • Keyword: Finite Element Method
  • Keyword: Silicon
  • Keyword: Resolution
  • STI Subject Categories: 430303 -- Particle Accelerators-- Experimental Facilities & Equipment
  • STI Subject Categories: 47 Other Instrumentation


  • Conference: International conference on insertion devices, Stanford, CA, USA, 28 Oct 1985


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article


  • Text


  • Other: DE86004000
  • Report No.: LBL-20306
  • Report No.: CONF-8510186-5
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 6398997
  • Archival Resource Key: ark:/67531/metadc1206205


  • Display Note: NTIS, PC A02/MF A01; 1.