Simulating the effects of thermoelastic deformation on the THESEUS Soft X-ray Imager optics

S. Svendsen; E. B. Knudsen; S. Blake; T. Oosterbroek; A. 'S Jegers; D. D. M. Ferreira; T. Prod'homme; B. Shortt; R. Willingale; P. O'Brien

doi:10.1117/12.2529113

9 September 2019 Simulating the effects of thermoelastic deformation on the THESEUS Soft X-ray Imager optics

S. Svendsen, E. B. Knudsen, S. Blake, T. Oosterbroek, A. 'S Jegers, D. D. M. Ferreira, T. Prod'homme, B. Shortt, R. Willingale, P. O'Brien

Author Affiliations +

Proceedings Volume 11119, Optics for EUV, X-Ray, and Gamma-Ray Astronomy IX; 111191R (2019) https://doi.org/10.1117/12.2529113
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

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.

Citation Download Citation

S. Svendsen, E. B. Knudsen, S. Blake, T. Oosterbroek, A. 'S Jegers, D. D. M. Ferreira, T. Prod'homme, B. Shortt, R. Willingale, and P. O'Brien "Simulating the effects of thermoelastic deformation on the THESEUS Soft X-ray Imager optics", Proc. SPIE 11119, Optics for EUV, X-Ray, and Gamma-Ray Astronomy IX, 111191R (9 September 2019); https://doi.org/10.1117/12.2529113

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available