Advanced fabrication technologies for ultraprecise replicated mirrors for x-ray telescopes

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114441G.pdf (1.09 MB)

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https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11444/114441G/Advanced-fabrication-technologies-for-ultraprecise-replicated-mirrors-for-x-ray/10.1117/12.2560892.short?SSO=1

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https://doi.org/10.1117/12.2560892
 http://hdl.handle.net/11603/20627

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UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
UMBC Faculty Collection
UMBC Physics Department

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2020-12-13

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conference papers and proceedings
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Citation of Original Publication

Hidekazu Mimura, Gota Yamaguchi, Takehiro Kume, Yoko Takeo, Akinari Ito, Yusuke Matsuzawa, Takahiro Saito, Kentarou Hiraguri, Yusuke Takehara, Ayumu Takigawa, Keisuke Tamura, Tetsuo Kanoh, Kenji Tachibana, Hirokazu Hashizume, Ikuyuki Mitsuishi, "Advanced fabrication technologies for ultraprecise replicated mirrors for x-ray telescopes," Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 114441G (13 December 2020); doi: 10.1117/12.2560892

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©2020 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

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Abstract

For many years, Wolter mirrors have been used as imaging elements in X-ray telescopes. The shape error of Wolter mirrors fabricated by replicating the shape of a mandrel originates from the replication error in electroforming. We have been developing an X-ray focusing mirror for synchrotron radiation X-rays, as well as a high-precision electroforming process. In this paper, we report on the application of the advanced electroforming process to the fabrication of Wolter mirrors for the FOXSI Sun observation project. We also discuss the figuring accuracy of the mandrel.