Supermirror design for Hard X-Ray Telescopes on-board Hitomi (ASTRO-H)

Keisuke Tamura, Hideyo Kunieda, Yusuke Miyata, Takashi Okajima, Takuya Miyazawa, Akihiro Furuzawa, Hisamitsu Awaki, Yoshito Haba, Kazunori Ishibashi, Manabu Ishida, Yoshitomo Maeda, Hideyuki Mori, Yuzuru Tawara, Shigeo Yamauchi, Kentaro Uesugi, Yoshio Suzuki, Hxt Team

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We designed depth-graded multilayers, so-called supermirrors, with platinum/carbon (Pt/C) layer pairs for the Hard X-Ray Telescope (HXT) that was on-board the sixth Japanese X-Ray Astronomy Satellite Hitomi (ASTRO-H). The HXT has multinested thin foil optics, and the grazing angles of the X-ray mirrors are 0.07 to 0.27 deg. Supermirrors for HXTs are designed to provide a broad energy response (up to 80 keV) for astronomical requests. Under practical boundary conditions, we establish a block method applying empirical rules to maximize the integrated reflectivity. We fabricated Pt/C supermirrors using a DC magnetron sputtering system. The reflectivity of the mirrors was measured in a synchrotron radiation facility, SPring-8. We describe the design method for the supermirrors and our results.

Original languageEnglish
Article number011209
JournalJournal of Astronomical Telescopes, Instruments, and Systems
Volume4
Issue number1
DOIs
Publication statusPublished - 01-01-2018

Fingerprint

Astronomy
astronomy
Telescopes
Satellites
telescopes
X rays
Platinum
platinum
reflectivity
x rays
Carbon
mirrors
reflectance
carbon
grazing
design method
Synchrotron radiation
Magnetron sputtering
Metal foil
foils

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Control and Systems Engineering
  • Instrumentation
  • Astronomy and Astrophysics
  • Mechanical Engineering
  • Space and Planetary Science

Cite this

Tamura, Keisuke ; Kunieda, Hideyo ; Miyata, Yusuke ; Okajima, Takashi ; Miyazawa, Takuya ; Furuzawa, Akihiro ; Awaki, Hisamitsu ; Haba, Yoshito ; Ishibashi, Kazunori ; Ishida, Manabu ; Maeda, Yoshitomo ; Mori, Hideyuki ; Tawara, Yuzuru ; Yamauchi, Shigeo ; Uesugi, Kentaro ; Suzuki, Yoshio ; Team, Hxt. / Supermirror design for Hard X-Ray Telescopes on-board Hitomi (ASTRO-H). In: Journal of Astronomical Telescopes, Instruments, and Systems. 2018 ; Vol. 4, No. 1.
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Tamura, K, Kunieda, H, Miyata, Y, Okajima, T, Miyazawa, T, Furuzawa, A, Awaki, H, Haba, Y, Ishibashi, K, Ishida, M, Maeda, Y, Mori, H, Tawara, Y, Yamauchi, S, Uesugi, K, Suzuki, Y & Team, H 2018, 'Supermirror design for Hard X-Ray Telescopes on-board Hitomi (ASTRO-H)', Journal of Astronomical Telescopes, Instruments, and Systems, vol. 4, no. 1, 011209. https://doi.org/10.1117/1.JATIS.4.1.011209

Supermirror design for Hard X-Ray Telescopes on-board Hitomi (ASTRO-H). / Tamura, Keisuke; Kunieda, Hideyo; Miyata, Yusuke; Okajima, Takashi; Miyazawa, Takuya; Furuzawa, Akihiro; Awaki, Hisamitsu; Haba, Yoshito; Ishibashi, Kazunori; Ishida, Manabu; Maeda, Yoshitomo; Mori, Hideyuki; Tawara, Yuzuru; Yamauchi, Shigeo; Uesugi, Kentaro; Suzuki, Yoshio; Team, Hxt.

In: Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 4, No. 1, 011209, 01.01.2018.

Research output: Contribution to journalArticle

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T1 - Supermirror design for Hard X-Ray Telescopes on-board Hitomi (ASTRO-H)

AU - Tamura, Keisuke

AU - Kunieda, Hideyo

AU - Miyata, Yusuke

AU - Okajima, Takashi

AU - Miyazawa, Takuya

AU - Furuzawa, Akihiro

AU - Awaki, Hisamitsu

AU - Haba, Yoshito

AU - Ishibashi, Kazunori

AU - Ishida, Manabu

AU - Maeda, Yoshitomo

AU - Mori, Hideyuki

AU - Tawara, Yuzuru

AU - Yamauchi, Shigeo

AU - Uesugi, Kentaro

AU - Suzuki, Yoshio

AU - Team, Hxt

PY - 2018/1/1

Y1 - 2018/1/1

N2 - We designed depth-graded multilayers, so-called supermirrors, with platinum/carbon (Pt/C) layer pairs for the Hard X-Ray Telescope (HXT) that was on-board the sixth Japanese X-Ray Astronomy Satellite Hitomi (ASTRO-H). The HXT has multinested thin foil optics, and the grazing angles of the X-ray mirrors are 0.07 to 0.27 deg. Supermirrors for HXTs are designed to provide a broad energy response (up to 80 keV) for astronomical requests. Under practical boundary conditions, we establish a block method applying empirical rules to maximize the integrated reflectivity. We fabricated Pt/C supermirrors using a DC magnetron sputtering system. The reflectivity of the mirrors was measured in a synchrotron radiation facility, SPring-8. We describe the design method for the supermirrors and our results.

AB - We designed depth-graded multilayers, so-called supermirrors, with platinum/carbon (Pt/C) layer pairs for the Hard X-Ray Telescope (HXT) that was on-board the sixth Japanese X-Ray Astronomy Satellite Hitomi (ASTRO-H). The HXT has multinested thin foil optics, and the grazing angles of the X-ray mirrors are 0.07 to 0.27 deg. Supermirrors for HXTs are designed to provide a broad energy response (up to 80 keV) for astronomical requests. Under practical boundary conditions, we establish a block method applying empirical rules to maximize the integrated reflectivity. We fabricated Pt/C supermirrors using a DC magnetron sputtering system. The reflectivity of the mirrors was measured in a synchrotron radiation facility, SPring-8. We describe the design method for the supermirrors and our results.

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SN - 2329-4124

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