1. Advanced fabrication technologies for ultraprecise replicated mirrors for x-ray telescopes
- Author
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Hirokazu Hashizume, Gota Yamaguchi, Yusuke Matsuzawa, Takehiro Kume, Yoko Takeo, Kenji Tachibana, Takahiro Saito, Ayumu Takigawa, Hidekazu Mimura, Kentarou Hiraguri, Yusuke Takehara, Tetsuo Kanoh, Akinari Ito, Ikuyuki Mitsuishi, and Keisuke Tamura
- Subjects
Figuring ,Mandrel ,Materials science ,Optics ,Fabrication ,business.industry ,Electroforming ,Replication Error ,Synchrotron radiation ,X-ray telescope ,business - 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.
- Published
- 2020