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Proceedings Paper

Development of a lightweight x-ray mirror using thin carbon-fiber-reinforced plastic (CFRP)
Author(s): Hisamitsu Awaki; Chisato Oue; Hayao Iwakiri; Maki Omatsu; Tessei Yoshida; Tsubasa Yokota; Naoki Ishida; Hironori Matsumoto
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Paper 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.

Paper Details

Date Published: 6 July 2018
PDF: 7 pages
Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 106993R (6 July 2018); doi: 10.1117/12.2312037
Show Author Affiliations
Hisamitsu Awaki, Ehime Univ. (Japan)
Chisato Oue, Ehime Univ. (Japan)
Hayao Iwakiri, Ehime Univ. (Japan)
Maki Omatsu, Ehime Univ. (Japan)
Tessei Yoshida, Ehime Univ. (Japan)
Tsubasa Yokota, Nagoya Univ. (Japan)
Naoki Ishida, Nagoya Univ. (Japan)
Hironori Matsumoto, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 10699:
Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Shouleh Nikzad; Kazuhiro Nakazawa, Editor(s)

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