Development of x-ray optics for the solar flare sounding rocket FOXSI-4: ground calibration

Kazuki Ampuku; Koki Sakuta; Ryuto Fujii; Yusuke Yoshida; 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; Kentarou Hiraguri; Hirokazu Hashizume; Hidekazu Mimura; Ikuyuki Mitsuishi

doi:10.1117/12.3018109

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

Kazuki Ampuku, Koki Sakuta, Ryuto Fujii, Yusuke Yoshida, 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, Kentarou Hiraguri, Hirokazu Hashizume, Hidekazu Mimura, Ikuyuki Mitsuishi

Author Affiliations +

Proceedings Volume 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray; 1309323 (2024) https://doi.org/10.1117/12.3018109
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

We have been developing X-ray optics for a fourth FOXSI (Focusing Optics X-ray Solar Imager) sounding rocket experiment, FOXSI-4. We fabricated two types of X-ray optics, soft X-ray optics (SXR) and hard X-ray optics (HXR), specified for soft and hard X-ray observations. We conducted X-ray irradiation tests to evaluate X-ray performances such as angular resolution and effective area. For the Flight Model (FM) SXR, the resultant angular resolution in Half Power Diameter (HPD) is 16 ± 2 / 14 ± 2 arcseconds at 2.7 / 4.5 keV for the best images, respectively and no significant energy dependence in HPD is seen. The observed effective area was reproduced within an accuracy of 10% by using our original ray-tracing simulator considering all of the SXR components in the 1.5-16 keV range at the smallest off-axis angle. Subsequently, both FM mirror module assemblies were integrated into a sounding rocket in combination with detectors and the vibration tests were performed for the whole sounding rocket system. Finally, FOXSI-4 was successfully launched on April 17, 2024 (UTC), and the sounding rocket and the data were also recovered successfully.

Conference Presentation

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

Citation Download Citation

Kazuki Ampuku, Koki Sakuta, Ryuto Fujii, Yusuke Yoshida, 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, Kentarou Hiraguri, Hirokazu Hashizume, Hidekazu Mimura, and Ikuyuki Mitsuishi "Development of x-ray optics for the solar flare sounding rocket FOXSI-4: ground calibration", Proc. SPIE 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray, 1309323 (21 August 2024); https://doi.org/10.1117/12.3018109

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