A method of optimizing grazing incidence x-ray coatings in ground based axion helioscopes is presented. Software has been been developed to find the optimum coating when taking both axion spectrum and Micromegas detector quantum efficiency into account. A comparison of the relative effective area in the telescope using different multilayer material combinations is produced. Similar methods are used for IAXO, a planned axion helioscope. Additionally, the optimal focal length is modelled while taking into account the least possible background contribution from the detector.
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Anders C. Jakobsen ; Michael J. Pivovaroff and Finn E. Christensen
X-ray optics for axion helioscopes
", Proc. SPIE 8861, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VI, 886113 (September 26, 2013); doi:10.1117/12.2024476; http://dx.doi.org/10.1117/12.2024476