XL-Calibur: the next-generation balloon-borne hard x-ray polarimeter
XL-Calibur: the next-generation balloon-borne hard x-ray polarimeter
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XL-Calibur：下一代气球载硬 X 射线旋光计
DOI：
10.1117/12.2560319
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Awaki Hisamitsu et al.
中科院分区：
文献类型：
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作者：
Maeda Yoshitomo;Abarr Quincy;Awaki Hisamitsu et al.
本文介绍了第二代气球载硬 X 射线偏振测量任务 XL-Calibur。 X 射线偏振测量有望提供有关高能天体物理源（例如脉冲星和双黑洞系统）的定性新信息。 XL-Calibur 包含掠入射 X 射线望远镜和对线性偏振敏感的焦平面探测器单元。该望远镜的设计与 ASTRO-H HXT 望远镜非常相似，后者拥有世界上最大的约 10 keV 的有效面积。探测器单元将低原子序数康普顿散射体与 CdZnTe 探测器组件相结合，利用偏振光子康普顿散射优先垂直于电场方向的事实来测量偏振。它还在底部包含一个 CdZnTe 成像仪。探测器组件被改进的反符合屏蔽包围，提供了更好的灵敏度。将实现弧秒精度的指向系统。
This paper introduces a second-generation balloon-borne hard X-ray polarimetry mission, XL-Calibur. X-ray polarimetry promises to give qualitatively new information about high-energy astrophysical sources, such as pulsars and binary black hole systems. The XL-Calibur contains a grazing incidence X-ray telescope with a focal plane detector unit that is sensitive to linear polarization. The telescope is very similar in design to the ASTRO-H HXT telescopes that has the world’s largest effective area above ~10 keV. The detector unit combines a low atomic number Compton scatterer with a CdZnTe detector assembly to measure the polarization making use of the fact that polarized photons Compton scatter preferentially perpendicular to the electric field orientation. It also contains a CdZnTe imager at the bottom. The detector assembly is surrounded by the improved anti-coincidence shielding, giving a better sensitivity. The pointing system with arcsecond accuracy will be achieved.