29 July 2010 Methods of optimizing x-ray optical prescriptions for wide-field applications
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Abstract
We are working on the development of a method for optimizing wide-field X-ray telescope mirror prescriptions, including polynomial coefficients, mirror shell relative displacements, and (assuming 4 focal plane detectors) detector placement along the optical axis and detector tilt. With our methods, we hope to reduce number of Monte-Carlo ray traces required to search the multi-dimensional design parameter space, and to lessen the complexity of finding the optimum design parameters in that space. Regarding higher order polynomial terms as small perturbations of an underlying Wolter I optic design, we begin by using the results of Monte-Carlo ray traces to devise trial analytic functions, for an individual Wolter I mirror shell, that can be used to represent the spatial resolution on an arbitrary focal surface. We then introduce a notation and tools for Monte-Carlo ray tracing of a polynomial mirror shell prescription which permits the polynomial coefficients to remain symbolic. In principle, given a set of parameters defining the underlying Wolter I optics, a single set of Monte-Carlo ray traces are then sufficient to determine the polymonial coefficients through the solution of a large set of linear equations in the symbolic coefficients. We describe the present status of this development effort.
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Ronald F. Elsner, Ronald F. Elsner, Stephen L. O'Dell, Stephen L. O'Dell, Brian D. Ramsey, Brian D. Ramsey, Martin C. Weisskopf, Martin C. Weisskopf, } "Methods of optimizing x-ray optical prescriptions for wide-field applications", Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77322L (29 July 2010); doi: 10.1117/12.856420; https://doi.org/10.1117/12.856420
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