Recent results of hard x-ray characterization of ASTRO-H HXT at SPring-8
Recent results of hard x-ray characterization of ASTRO-H HXT at SPring-8
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SPring-8 上 ASTRO-H HXT 硬 X 射线表征的最新结果
DOI：
10.1117/12.927271
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
T.
中科院分区：
文献类型：
--
作者：
Miyazawa;T.
我们介绍了ASTRO-H HXT在SPring-8上的硬x射线表征的最新结果。ASTRO-H上的HXT是薄箔，多嵌套锥形光学元件，类似于朱雀x射线望远镜。为了有效地反射硬x射线，在反射器表面涂覆了深度梯度Pt/C多层膜。HXT-1镜像模块的集成已经完成。该镜像模块已在同步辐射设备SPring-8光束线BL20B2上进行了表征。我们采用了一种新的带有压电驱动器的主动调谐程序来改善聚焦图像的共焦性。我们测量了30、40、50和60 keV下的点扩展函数和有效面积。在30 keV下获得了1.9角分（HPD）的角分辨率。HXT-1在30 keV时的有效面积满足HXT的要求。
We present recent results of hard X-ray characterization of ASTRO-H HXT at SPring-8. The HXT onboard ASTRO-H is thin-foil, multi-nested conical optics similar to the Suzaku X-ray telescope. To reflect hard X-rays efficiently, reflector surface is coated with depth-graded Pt/C multilayer. The integraion of the HXT-1 mirror module has been completed. This mirror module has been characterized at a synchrotron radiation facility, SPring-8 beamline BL20B2. We have adopted, newly, an active tuning procedure with piezoelectric actuator to improve a focused image confocality. We have measured point spread function and effective area at 30, 40, 50, and 60 keV. An angular resolution of 1.9 arcmin (HPD) at 30 keV was obtained in the full telescope. The effective area of HXT-1 at 30 keV meets the requirements of HXT.