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Thermo-mechanical analyses of mirror for NSLS-II beamline

Published online by Cambridge University Press:  14 January 2011

V. Ravindranath ,
S. Sharma ,
R. Reininger  and
N. Wang
V. Ravindranath*
Affiliation:
NSLS II, Brookhaven National Laboratory, Upton, NY 11973, USA
S. Sharma
Affiliation:
NSLS II, Brookhaven National Laboratory, Upton, NY 11973, USA
R. Reininger
Affiliation:
NSLS II, Brookhaven National Laboratory, Upton, NY 11973, USA
N. Wang
Affiliation:
SSRF, Shanghai, China
*
†Email address for correspondence:[email protected]
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Abstract

Finite-element analysis (FEA) is utilized to model the temperature distribution and heat-induced deformation of the first mirror of the coherent soft X-ray beamline at NSLS-II. The FEA results of the cooling design show a thermal bump on the area illuminated by the beam plus an overall mirror bending. The resulting slope errors are almost linear over the area where the power is absorbed and have a complex dependence on the mirror thickness. The linear change of the slope error means a constant convex radius of curvature whose defocusing effect can be corrected with a bendable mirror positioned downstream in the beamline. In this paper we discuss the design optimization of the mirror thickness using FEA as a tool.

Type
Poster paper
Information
Diamond Light Source Proceedings , Volume 1 , Issue MEDSI-6 , October 2010 , e55
Copyright
Copyright © Diamond Light Source Ltd 2011

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References

REFERENCES

Reininger, R. 2011 SRCalc. http://www.sas-rr.comGoogle Scholar
Reininger, R., Kriesel, K., Hulbert, S. L., Sánchez-Hanke, C. & Arena, D. A. 2008 A soft x-ray beamline capable of canceling the performance impairment due to power absorbed on its optical elements. Rev. Sci. Intrum. 79, 033108.Google Scholar