Development of x-ray optics for the solar flare sounding rocket FOXSI-4: ray-tracing simulation

Yusuke Yoshida; Koki Sakuta; Kazuki Ampuku; Ryuto Fujii; Kumiko Okada; Keitoku Yoshihira; Tetsuo Kano; Naoki Ishida; Wataru Kato; Yoshitaka Inoue; Keisuke Tamura; Kikuko Miyata; Noriyuki Narukage; Gota Yamaguchi; Shunsuke Ito; Shutaro Mohri; Takehiro Kume; Yusuke Matsuzawa; Yoichi Imamura; Takahiro Saito; Kentaro Hiraguri; Hirokazu Hashizume; Hidekazu Mimura; Ikuyuki Mitsuishi

doi:10.1117/12.3018175

21 August 2024 Development of x-ray optics for the solar flare sounding rocket FOXSI-4: ray-tracing simulation

Yusuke Yoshida, Koki Sakuta, Kazuki Ampuku, Ryuto Fujii, Kumiko Okada, Keitoku Yoshihira, Tetsuo Kano, Naoki Ishida, Wataru Kato, Yoshitaka Inoue, Keisuke Tamura, Kikuko Miyata, Noriyuki Narukage, Gota Yamaguchi, Shunsuke Ito, Shutaro Mohri, Takehiro Kume, Yusuke Matsuzawa, Yoichi Imamura, Takahiro Saito, Kentaro Hiraguri, Hirokazu Hashizume, Hidekazu Mimura, Ikuyuki Mitsuishi

Author Affiliations +

Proceedings Volume 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray; 130936W (2024) https://doi.org/10.1117/12.3018175
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

We have been developing high-resolution space X-ray optics by using high-precision electroforming technology which has been refined through the development of ground-based X-ray focusing systems. Our optics have been on board the Japan-U.S. joint NASA sounding rocket experiment, the 4th Focusing Optics X-ray Solar Imager (FOXSI-4), which succeeded in the world's first X-ray imaging and spectroscopic observation of solar flares. So far, we have conducted ground calibration tests on these onboard items. We have been building our own ray-tracing simulator in order to model the data and finally construct a response function which is essential for obtaining physical parameters in imaging and spectroscopic analysis accurately. In this paper, we modeled the uncertainty of the reflection angle due to the surface shape error in the axial direction and implemented it in this simulator for the first time. As a result, we succeeded in reproducing the point spread function up to ~50 arcsec assuming a Cauchy distribution and confirmed the consistency between simulations and the data in terms of FWHM and HPD for the on-axis direction. Additionally, we optimized parameters of a Cauchy distribution also for the off-axis data and investigated the dependence of the parameters on the off-axis angles.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Yusuke Yoshida, Koki Sakuta, Kazuki Ampuku, Ryuto Fujii, Kumiko Okada, Keitoku Yoshihira, Tetsuo Kano, Naoki Ishida, Wataru Kato, Yoshitaka Inoue, Keisuke Tamura, Kikuko Miyata, Noriyuki Narukage, Gota Yamaguchi, Shunsuke Ito, Shutaro Mohri, Takehiro Kume, Yusuke Matsuzawa, Yoichi Imamura, Takahiro Saito, Kentaro Hiraguri, Hirokazu Hashizume, Hidekazu Mimura, and Ikuyuki Mitsuishi "Development of x-ray optics for the solar flare sounding rocket FOXSI-4: ray-tracing simulation", Proc. SPIE 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray, 130936W (21 August 2024); https://doi.org/10.1117/12.3018175

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