Electrodeposition simulation for fabricating Wolter mirrors of x-ray telescopes

Akinari Ito; Gota Yamaguchi; Takafumi Watanabe; Yoko Takeo; Takehiro Kume; Yusuke Matsuzawa; Takahiro Saito; Kentaro Hiraguri; Keisuke Tamura; Ayumu Takigawa; Tetsuo Kanoh; Naoki Ishida; Ikuyuki Mitsuishi; Hirokazu Hashizume; Hidekazu Mimura

doi:10.1117/12.2595124

21 September 2021 Electrodeposition simulation for fabricating Wolter mirrors of x-ray telescopes

Akinari Ito, Gota Yamaguchi, Takafumi Watanabe, Yoko Takeo, Takehiro Kume, Yusuke Matsuzawa, Takahiro Saito, Kentaro Hiraguri, Keisuke Tamura, Ayumu Takigawa, Tetsuo Kanoh, Naoki Ishida, Ikuyuki Mitsuishi, Hirokazu Hashizume, Hidekazu Mimura

Author Affiliations +

Proceedings Volume 11837, Advances in X-Ray/EUV Optics and Components XVI; 118370D (2021) https://doi.org/10.1117/12.2595124
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

Wolter mirrors work as imaging optics of X-ray telescopes. We have been developing a Wolter mirror for the FOXSI-4 project in 2023 using a high-precision Ni electroforming process. The figure accuracy of mirrors is one of the main factors determining the spatial resolution in X-ray imaging. In this study, we optimized the electrodeposition conditions from the viewpoint of the uniformity of film thickness. The simulation model was developed to correctly predict the film thickness distribution before fabrication, whose parameters and boundary conditions were determined through electrochemical experiments. The model calculates the distribution of current density on the surface of the cathode by finite element analysis. In this paper, we report the current status of the electroforming process specializing in Wolter mirrors in X-ray telescopes.

Conference Presentation

Citation Download Citation

Akinari Ito, Gota Yamaguchi, Takafumi Watanabe, Yoko Takeo, Takehiro Kume, Yusuke Matsuzawa, Takahiro Saito, Kentaro Hiraguri, Keisuke Tamura, Ayumu Takigawa, Tetsuo Kanoh, Naoki Ishida, Ikuyuki Mitsuishi, Hirokazu Hashizume, and Hidekazu Mimura "Electrodeposition simulation for fabricating Wolter mirrors of x-ray telescopes", Proc. SPIE 11837, Advances in X-Ray/EUV Optics and Components XVI, 118370D (21 September 2021); https://doi.org/10.1117/12.2595124

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