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

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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    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.
    Original languageEnglish
    Title of host publicationSpace Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray
    EditorsJan-Willem A. den Herder, Shouleh Nikzad, Kazuhiro Nakazawa
    Number of pages17
    Volume11444
    PublisherSPIE - International Society for Optical Engineering
    Publication date2020
    Article number114444K
    DOIs
    Publication statusPublished - 2020
    EventSpace Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray - Online event
    Duration: 14 Dec 202018 Dec 2020

    Conference

    ConferenceSpace Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray
    LocationOnline event
    Period14/12/202018/12/2020
    SeriesProceedings of SPIE, the International Society for Optical Engineering
    ISSN0277-786X

    Keywords

    • Athena
    • X-ray optics
    • Thin film
    • Iridium
    • Silicon carbide
    • Silicon pore optics

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