Development of a lightweight x-ray mirror using thin carbon-fiber-reinforced plastic (CFRP)

Hisamitsu Awaki; Chisato Oue; Hayao Iwakiri; Maki Omatsu; Tessei Yoshida; Tsubasa Yokota; Naoki Ishida; Hironori Matsumoto

doi:10.1117/12.2312037

6 July 2018 Development of a lightweight x-ray mirror using thin carbon-fiber-reinforced plastic (CFRP)

Hisamitsu Awaki, Chisato Oue, Hayao Iwakiri, Maki Omatsu, Tessei Yoshida, Tsubasa Yokota, Naoki Ishida, Hironori Matsumoto

Author Affiliations +

Proceedings Volume 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray; 106993R (2018) https://doi.org/10.1117/12.2312037
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

We fabricated X-ray mirrors from carbon-fiber-reinforced-plastic (CFRP) with a tightly nested design for X-ray satellites. The mirror shape is Wolter type-I quadrant shell geometry with a diameter of 200 mm and a focal length of 12 m. The mirror substrates were successfully formed with a rms error of about 1 μm. Through a replication process, a smooth surface was obtained on the CFRP substrate. We are developing a positioning method of thin mirrors in a telescope housing. It is found that a piezo-linear motor is very useful to adjust the mirror position with accuracy of sub μm. The CFRP mirrors were evaluated by using 20 keV X-ray pencil beam at BL20B2 in SPring-8 synchrotron radiation facility. The HPD of the mirrors was estimated to be about 2.3 arc-minutes. The spread of X-ray image would be caused by small waviness on the mirror surface after replication.

Citation Download Citation

Hisamitsu Awaki, Chisato Oue, Hayao Iwakiri, Maki Omatsu, Tessei Yoshida, Tsubasa Yokota, Naoki Ishida, and Hironori Matsumoto "Development of a lightweight x-ray mirror using thin carbon-fiber-reinforced plastic (CFRP)", Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 106993R (6 July 2018); https://doi.org/10.1117/12.2312037

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