T. Sakao, S. Matsuyama, J. Yamada, Takato Inoue, Kentaro Hata, Hiroyuki Yamaguchi, T. Hagiwara, Nami Nakamura, K. Yamauchi, Y. Kohmura, Y. Suematsu, N. Narukage
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Development of precision Wolter mirrors towards PhoENiX mission for the Sun
We present ongoing efforts on the development of precision Wolter mirrors for the Soft X-ray Imaging Spectrometer (SXIS) aboard PhoENiX mission proposed to JAXA for studying mechanism(s) of particle acceleration and its relationship with magnetic reconnection in solar flares. The Wolter mirrors for PhoENiX/SXIS are made by direct polishing of glass-ceramic substrates. So far, we succeeded in fabricating a small size of high precision Wolter surfaces (e.g., PSF core size of ~0.2 arcsec HPD at 8 keV) as well as good indication of extending the mirror area along the cylindrical direction. Recent status of the mirror development will be reported.
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