Anodic bonding to manufacture LAUE lenses for high-energy astrophysics

Andrea Mazzolari; Filippo Frontera; Marco Romagnoni; Vincenzo Guidi; Melissa Tamisari; Lisa Ferro; Miguel Moita; Piero Rosati; Cristiano Guidorzi; Laura Bandiera; Lorenzo Malagutti; Mauro Orlandini; Enrico Virgilli; Natalia Auricchio; Ezio Caroli; John B. Stephen; Roberto Verbeni

doi:10.1117/12.2665894

7 June 2023 Anodic bonding to manufacture LAUE lenses for high-energy astrophysics

Andrea Mazzolari, Filippo Frontera, Marco Romagnoni, Vincenzo Guidi, Melissa Tamisari, Lisa Ferro, Miguel Moita, Piero Rosati, Cristiano Guidorzi, Laura Bandiera, Lorenzo Malagutti, Mauro Orlandini, Enrico Virgilli, Natalia Auricchio, Ezio Caroli, John B. Stephen, Roberto Verbeni

Author Affiliations +

Proceedings Volume 12576, EUV and X-ray Optics: Synergy between Laboratory and Space VIII; 125760F (2023) https://doi.org/10.1117/12.2665894
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Abstract

The hard X-/soft gamma-ray band is still not well explored in astrophysics in spite of several unanswered science questions that can only be settled in this energy band, such as the origin of the 511 keV positron annihilation line from the Galactic Center region. The main reason is that this band has been explored so far with non-focusing instruments, that can achieve a limited sensitivity and angular resolution. Our goal is the development of a focusing telescope based on a Laue lens made of bent crystals of Silicon and Germanium, that diffract photons in the 50-700 keV band, with unprecedented angular resolution and sensitivity to continuum spectrum and to lines. Here some result will be reported concerning the elastic bending of the crystals by pressing them on substrates with one of the two main surfaces worked in order to get the same curvature of the lens. This is achieved thanks to accurately anodic bonding them to these substrates, avoiding/without the use of glue, in such a way to satisfy the required angular orientation of the crystals in the lens.

Conference Presentation

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Andrea Mazzolari, Filippo Frontera, Marco Romagnoni, Vincenzo Guidi, Melissa Tamisari, Lisa Ferro, Miguel Moita, Piero Rosati, Cristiano Guidorzi, Laura Bandiera, Lorenzo Malagutti, Mauro Orlandini, Enrico Virgilli, Natalia Auricchio, Ezio Caroli, John B. Stephen, and Roberto Verbeni "Anodic bonding to manufacture LAUE lenses for high-energy astrophysics", Proc. SPIE 12576, EUV and X-ray Optics: Synergy between Laboratory and Space VIII, 125760F (7 June 2023); https://doi.org/10.1117/12.2665894

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