Mr. Lilian Marchebout Profile

Lilian Marchebout

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Proceedings Article | 21 August 2024 Poster + Paper

Kirkpatrick-Baez silicon pore optics for high-angular-resolution hard x-ray telescope

Nicolas Barrière, Maximilien Collon, Laurens Keek, Lilian Marchebout, Giuseppe Vacanti, Marco Beijersbergen

Proceedings Volume 13093, 130934V (2024) https://doi.org/10.1117/12.3020953

KEYWORDS: Mirrors, Silicon, X-ray optics, X-ray telescopes, Space mirrors, Hard x-rays

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We present a concept of hard X-ray telescope that could realistically reach arc-second level angular resolution. The optics is based on Kirkpatrick-Baez (K-B) configuration realised with Silicon Pore Optics (SPO) technology. SPO has been developed for 20 years at cosine (The Netherlands) for the European Space Agency’s next generation large X-ray telescope, NewAthena. This technology provides all the elements to realise a high-angular-resolution K-B optics. In this configuration the plates only need a slight meridional curvature and are flat in the sagittal direction, which reduces drastically the stress they undergo, and consequently the formation of slope errors. SPO is well suited for K-B configuration as the ribs running along the plates block efficiently stray light. Without sagittal curvature, the K-B mirror modules can be designed for the very small grazing incidence required for reflectivity at high energies. This type of telescope could be well suited for solar physics or astrophysics as a complement to NewAthena.

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