Methods of optimizing X-ray optical prescriptions for wide-field applications

TL;DR

This paper presents a new method for optimizing wide-field X-ray telescope mirror prescriptions that reduces computational effort and complexity by using analytic functions and symbolic Monte-Carlo ray tracing.

Contribution

It introduces a novel approach to optimize mirror prescriptions using symbolic coefficients and analytic functions, minimizing the need for extensive ray tracing.

Findings

Developed trial analytic functions for spatial resolution

Introduced symbolic Monte-Carlo ray tracing tools

Proposed a linear equation approach for coefficient determination

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.