TY - GEN
T1 - Recent progress in the ground calibration of the ASTRO-H Hard X-ray telescope (HXT-2)
AU - Mori, Hideyuki
AU - Kuroda, Yuji
AU - Miyazawa, Takuya
AU - Awaki, Hisamitsu
AU - Babazaki, Yasunori
AU - Furuzawa, Akihiro
AU - Hibino, Tatsuya
AU - Iizuka, Ryo
AU - Ishibashi, Kazunori
AU - Iwase, Toshihiro
AU - Kunieda, Hideyo
AU - Kurihara, Daichi
AU - Matsumoto, Hironori
AU - Miyata, Yusuke
AU - Saji, Shigetaka
AU - Sugita, Satoshi
AU - Suzuki, Yoshio
AU - Tachibana, Sasagu
AU - Tamura, Keisuke
AU - Tawara, Yuzuru
AU - Uesugi, Kentaro
N1 - Publisher Copyright:
© 2014 SPIE.
PY - 2014
Y1 - 2014
N2 - The 6th Japanese X-ray satellite, ASTRO-H, equips two Hard X-ray Telescopes (HXTs) to perform imaging spectroscopy up to 70 keV. The 2nd flight module (HXT-2) had been completed in July, 2013. After some environmental tests were passed, the X-ray performance of the HXT-2 was measured at the SPring-8 BL20B2, 3rd generation synchrotron facility. The angular resolution defined with a Half Power Diameter (HPD) was 1:′29 at 30 keV and 1:′28 at 50 keV. This small energy dependence is considered to be caused by the difference in image quality of each foil; the inner mirror shells have better quality than outer ones. The effective area was found to be 178 cm2 at 30 keV and 82 cm2 at 50 keV, both of which exceed the requirement. Furthermore, the detailed energy dependence of the effective area was examined for a limited aperture in the 30{70 keV band with a pitch of 1 keV. We also measured the off-axis dependence of the effective area at 50 keV, and then determined the optical axis. The field of view of the HXT-2 was found to be 5:′26 (FWHM of the vignetting function), consistent with the simulation. In this paper, we also report the detailed analysis of the ground calibration data, which will be used for image reconstruction by a ray-tracing simulator.
AB - The 6th Japanese X-ray satellite, ASTRO-H, equips two Hard X-ray Telescopes (HXTs) to perform imaging spectroscopy up to 70 keV. The 2nd flight module (HXT-2) had been completed in July, 2013. After some environmental tests were passed, the X-ray performance of the HXT-2 was measured at the SPring-8 BL20B2, 3rd generation synchrotron facility. The angular resolution defined with a Half Power Diameter (HPD) was 1:′29 at 30 keV and 1:′28 at 50 keV. This small energy dependence is considered to be caused by the difference in image quality of each foil; the inner mirror shells have better quality than outer ones. The effective area was found to be 178 cm2 at 30 keV and 82 cm2 at 50 keV, both of which exceed the requirement. Furthermore, the detailed energy dependence of the effective area was examined for a limited aperture in the 30{70 keV band with a pitch of 1 keV. We also measured the off-axis dependence of the effective area at 50 keV, and then determined the optical axis. The field of view of the HXT-2 was found to be 5:′26 (FWHM of the vignetting function), consistent with the simulation. In this paper, we also report the detailed analysis of the ground calibration data, which will be used for image reconstruction by a ray-tracing simulator.
UR - http://www.scopus.com/inward/record.url?scp=84922495780&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84922495780&partnerID=8YFLogxK
U2 - 10.1117/12.2055656
DO - 10.1117/12.2055656
M3 - Conference contribution
AN - SCOPUS:84922495780
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Space Telescopes and Instrumentation 2014
A2 - Takahashi, Tadayuki
A2 - den Herder, Jan-Willem A.
A2 - Bautz, Mark
PB - SPIE
T2 - Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
Y2 - 22 June 2014 through 26 June 2014
ER -