New design concept of hard x-ray supermirrors for astronomical x-ray telescopes

Fangfang Wang; Jingtao Zhu; Moyan Tan; Li Jiang; Zhanshan Wang

doi:10.1117/12.887371

18 February 2011 New design concept of hard x-ray supermirrors for astronomical x-ray telescopes

Fangfang Wang, Jingtao Zhu, Moyan Tan, Li Jiang, Zhanshan Wang

Proceedings Volume 7995, Seventh International Conference on Thin Film Physics and Applications; 799508 (2011) https://doi.org/10.1117/12.887371
Event: Seventh International Conference on Thin Film Physics and Applications, 2010, Shanghai, China

Abstract

A numerical and analysis method for optimizing multilayer supermirrors is developed based on the combination of the power-law method and the local optimization method of simplex algorithm. The parameters in the power-law formula are optimized by genetic algorithm. This allows a global minimization of the merit function and a many-fold decrease of the computing time. Several groups of X-ray supermirrors with the energy extended to 30 keV are successfully designed using this optimization method for a hard X-ray telescope. Tungsten and boron carbide are chosen as the multilayer materials. High reflectivity and high effective area are obtained, indicating that this numerical and analysis method is an effective tool to design hard X-ray supermirrors.

Citation Download Citation

Fangfang Wang, Jingtao Zhu, Moyan Tan, Li Jiang, and Zhanshan Wang "New design concept of hard x-ray supermirrors for astronomical x-ray telescopes", Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 799508 (18 February 2011); https://doi.org/10.1117/12.887371

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KEYWORDS

Hard x-rays

Reflectivity

X-ray telescopes

Multilayers

X-rays

Optical instrument design

Optimization (mathematics)

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