Development of x-ray optics for the solar flare sounding rocket FOXSI-4: ground calibration
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.
Authors
- Noriyuki Narukage (ORCID: https://orcid.org/0000-0002-6330-3944)
- Takahiro Saito (ORCID: https://orcid.org/0000-0002-0344-3507)
- Kentarou Hiraguri
- Naoki Ishida (ORCID: https://orcid.org/0000-0003-2162-3605)
- Kikuko Miyata (ORCID: https://orcid.org/0000-0002-2508-0524)
- Yoichi Imamura (ORCID: https://orcid.org/0009-0000-9348-9164)
- Gota Yamaguchi (ORCID: https://orcid.org/0000-0003-4305-807X)
- Wataru Kato
- Ikuyuki Mitsuishi (ORCID: https://orcid.org/0000-0002-9901-233X)
- Yusuke Matsuzawa (ORCID: https://orcid.org/0000-0002-2409-3956)
- Hirokazu Hashizume (ORCID: https://orcid.org/0000-0002-4589-0460)
- Takehiro Kume (ORCID: https://orcid.org/0000-0002-1254-4297)
- Hidekazu Mimura (ORCID: https://orcid.org/0000-0003-4623-6951)
- Yusuke Yoshida (ORCID: https://orcid.org/0000-0002-0774-0509)
- Kazuki Ampuku (ORCID: https://orcid.org/0009-0005-3295-7215)
- Keitoku Yoshihira
- Shunsuke Ito (ORCID: https://orcid.org/0009-0003-7701-3387)
- Yoshitaka Inoue
- Ryuto Fujii (ORCID: https://orcid.org/0009-0004-5957-3505)
- Keisuke Tamura (ORCID: https://orcid.org/0000-0002-6677-3917)
- Shutaro Mohri
- Tetsuo Kano
- Kumiko Okada
- Koki Sakuta
Institutions
- Goddard Space Flight Center (US)
- Nitto RIKEN (Japan) (JP)
- National Astronomical Observatory of Japan (JP)
- Nagoya University (JP)
- University of Maryland, College Park (US)
- The University of Tokyo (JP)
- Meijo University (JP)
Publication Details
- Published
- 2024-08-21
- DOI
- https://doi.org/10.1117/12.3018109
- Primary Topic
- Solar and Space Plasma Dynamics
- Type
- article
- Field-Weighted Citation Impact
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