Status of the Ir and Ir/SiC coating development for the Athena optics

Sara Svendsen; Desiree D. M. Ferreira; Sonny Massahi; Atefeh Jafari; Nis C. Gellert; Finn E. Christensen; Peter L. Henriksen; Lan M. Vu; Arne S. Jegers; Brian Shortt; Boris Landgraf; David A. Girou; Maximillien J. Collon; Levent Cibik; Evelyn Handick; Michael Krumrey

doi:10.1117/12.2562430

13 December 2020 Status of the Ir and Ir/SiC coating development for the Athena optics

Sara Svendsen, Desiree D. M. Ferreira, Sonny Massahi, Atefeh Jafari, Nis C. Gellert, Finn E. Christensen, Peter L. Henriksen, Lan M. Vu, Arne S. Jegers, Brian Shortt, Boris Landgraf, David A. Girou, Maximillien J. Collon, Levent Cibik, Evelyn Handick, Michael Krumrey

Author Affiliations +

Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray; 114444K (2020) https://doi.org/10.1117/12.2562430
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

The mirror coatings for the Athena X-ray telescope assumes Ir/SiC bilayer thin films as a baseline design. Adding the soft overcoat to the Ir X-ray mirror coatings for the Athena optics is used to improve the low energy performance necessary to achieve the telescope effective area requirements. The Athena mirror is based on silicon pore optics technology, for which the manufacturing process involves a sequence of wet chemical and thermal post-coating treatments of the mirror plates. Establishing compatibility of the thin film material candidates following exposure to these processes is critical for the Athena mission since the specific coating quality will influence the performance of the X-ray telescope. We present an investigation of Ir and Ir/SiC thin films exposed to post-coating treatments based on coatings produced at DTU Space. The current status of the chemical procedures is presented with representative coatings from the Athena-dedicated coating facility.

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Sara Svendsen, Desiree D. M. Ferreira, Sonny Massahi, Atefeh Jafari, Nis C. Gellert, Finn E. Christensen, Peter L. Henriksen, Lan M. Vu, Arne S. Jegers, Brian Shortt, Boris Landgraf, David A. Girou, Maximillien J. Collon, Levent Cibik, Evelyn Handick, and Michael Krumrey "Status of the Ir and Ir/SiC coating development for the Athena optics", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 114444K (13 December 2020); https://doi.org/10.1117/12.2562430

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