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arXiv 1711.03475astro-ph.IM
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由弯曲晶体制成的Laue晶状体的预期性能

Expected performances of a Laue lens made with bent crystals

E. Virgilli, V. Valsan, F. Frontera, E. Caroli, V. Liccardo, J. B. Stephen

摘要:

在LAUE项目的背景下,致力于建立一个劳厄透镜原型聚焦天体硬X-/软伽马射线,劳厄透镜弯曲的晶体瓦制成,焦距为20米,模拟。聚焦能量通带假定为90- 600 keV。研究了由于晶体片未对准和晶体曲率径向畸变的影响,透镜在焦平面上产生的像畸变。计算了相应的透镜有效面积、点扩散函数和灵敏度,并与无失调和畸变的标称劳厄透镜进行了比较。这样的分析是至关重要的,以估计一个真正的镜头,其中所调查的缺点可能存在的光学特性。

英文摘要:

In the context of the LAUE project devoted to build a Laue lens prototype for focusing celestial hard X-/soft gamma-rays, a Laue lens made of bent crystal tiles, with 20 m focal length, is simulated. The focusing energy passband is assumed to be 90--600 keV. The distortion of the image produced by the lens on the focal plane, due to effects of crystal tile misalignment and radial distortion of the crystal curvature, is investigated. The corresponding effective area of the lens, its point spread function and sensitivity are calculated and compared with those exhibited by a nominal Laue lens with no misalignment and/or distortion. Such analysis is crucial to estimate the optical properties of a real lens, in which the investigated shortcomings could be present.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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