Advancing towards a swift, deterministic, and reliable process for high-resolution thin monolithic shells

M. M. Civitani; S. Basso; M. Fiorini; M. Ghigo; S. Incorvaia; L. Lessio; G. Pareschi; D. Spiga; G. Toso; G. Vecchi

doi:10.1117/12.3019155

21 August 2024 Advancing towards a swift, deterministic, and reliable process for high-resolution thin monolithic shells

M. M. Civitani, S. Basso, M. Fiorini, M. Ghigo, S. Incorvaia, L. Lessio, G. Pareschi, D. Spiga, G. Toso, G. Vecchi

Author Affiliations +

Proceedings Volume 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray; 1309316 (2024) https://doi.org/10.1117/12.3019155
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The traditional approach for creating very large X-ray mirror modules (with diameters exceeding 1 meter) involves dividing the optics into azimuthal and radial modules, similar to the Silicon Pore Optics used in Athena. While this method addresses the initial challenges of procuring and handling very large substrates, it introduces complexities in the later stages, particularly when thousands of segments must be assembled without compromising their optical performance. In contrast, a simpler design for large mirror modules could involve fewer than a few hundred thin monolithic shells (2-4 mm for mirror shells ranging from 0.4 to 3 meters in diameter). This configuration offers the dual benefits of design simplicity and high-resolution capability, achieved through direct polishing. Additionally, it significantly reduces the polishing time. In Italy, a technology development roadmap for this approach is being funded by ASI and led by INAF-OABrera. In this paper, we present the advancements made in the various phases of this process and in the procurement of new substrates.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

M. M. Civitani, S. Basso, M. Fiorini, M. Ghigo, S. Incorvaia, L. Lessio, G. Pareschi, D. Spiga, G. Toso, and G. Vecchi "Advancing towards a swift, deterministic, and reliable process for high-resolution thin monolithic shells", Proc. SPIE 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray, 1309316 (21 August 2024); https://doi.org/10.1117/12.3019155

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