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First results from the ground calibration of the NuSTAR flight optics

机译:NuSTAR飞行光学系统地面校准的初步结果

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NuSTAR is a hard X-ray satellite experiment to be launched in 2012. Two optics with 10.15 m focal length focus X-rays with energies between 5 and 80 keV onto CdZnTe detectors located at the end of a deployable mast. The FM1 and Fm~2 flight optics were built at the same time based on the same design and with very similar components, and thus the performance of both is expected to be very similar. We provide an overview of calibration data that is being used to build an optics response model for each optic and describe initial results for energies above 10 keV from the ground calibration of the flight optics. From a preliminary analysis of the data, our current best determination of the overall HPD of both the FM1 and Fm~2 flight optics is 52", and nearly independent of energy. The statistical error is negligible, and a preliminary estimate of the systematic error is of order 4". The as-measured effective area and HPD meet the top-level NuSTAR mission sensitivity requirements.
机译:NuSTAR是将于2012年发射的硬X射线卫星实验。两个光学元件,焦距为10.15 m,能量为5到80 keV的X射线聚焦到位于可展开桅杆末端的CdZnTe检测器上。 FM1和Fm〜2飞行光学器件是基于相同的设计并使用非常相似的组件同时制造的,因此,两者的性能有望非常相似。我们提供了用于建立每个光学系统的光学系统响应模型的校准数据的概述,并描述了从飞行光学系统的地面校准获得的10 keV以上能量的初始结果。从数据的初步分析来看,我们目前对FM1和Fm〜2飞行光学系统的整体HPD的最佳确定是52“,并且几乎与能量无关。统计误差可以忽略不计,并且系统误差的初步估计是是4“级。测得的有效面积和HPD满足最高的NuSTAR任务灵敏度要求。

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