@inproceedings{cd462c92de69450aba29b5a53ec55e0c,
title = "Simulating the effects of thermoelastic deformation on the THESEUS Soft X-ray Imager optics",
abstract = "We present a ray tracing simulation of the Soft X-ray Imager (SXI) optics for the THESEUS observatory using the open-source McXtrace software package. THESEUS is a candidate mission within the Cosmic Vision programme of the European Space Agency and is designed to monitor high-energy transient events in the entire sky, therefore relying on fast slewing of the spacecraft. This capability will however impose large temperature variations and gradients across the optics which can cause thermoelastic deformation of the Soft X-ray Imager microchannel optics. The purpose of this study is to evaluate the impact on the point spread function (PSF) due to in-orbit temperature variation. Based on thermal analysis of the Soft X-ray Imager, perturbations to the ideal microchannel geometry are derived and provided as input to the ray tracer.",
keywords = "THESEUS, Soft X-ray Imager, McXtrace, Ray tracing, Microchannel optics, Lobster eye optics, X-ray optics",
author = "S. Svendsen and Knudsen, {E. B.} and S. Blake and T. Oosterbroek and Jegers, {A. S.} and Ferreira, {D. D. M.} and T. Prod'hommec and B. Shortt and R. Willingale and P. O'Brien",
year = "2019",
doi = "10.1117/12.2529113",
language = "English",
volume = "11119",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE - International Society for Optical Engineering",
editor = "O'Dell, {Stephen L.} and Giovanni Pareschi",
booktitle = "Proceedings of SPIE 11119, Optics for EUV, X-Ray, and Gamma-Ray Astronomy IX",
note = "SPIE Optical Engineering + Applications 2019, Optics + Photonics 2019 ; Conference date: 11-08-2019 Through 15-08-2019",
}