TY - JOUR
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
N1 - Publisher Copyright:
© The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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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U2 - 10.1117/1.JATIS.4.1.011209
DO - 10.1117/1.JATIS.4.1.011209
M3 - Article
AN - SCOPUS:85041217538
SN - 2329-4124
VL - 4
JO - Journal of Astronomical Telescopes, Instruments, and Systems
JF - Journal of Astronomical Telescopes, Instruments, and Systems
IS - 1
M1 - 011209
ER -