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Development of a thin substrate for X-ray telescope

机译:开发用于X射线望远镜的薄基板

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摘要

Walter Type-I optics, which reflect X-rays twice with their confocal paraboloidal and hyperboloidal reflectors, have commonly been used in X-ray astronomy. These two reflectors usually consist of two thin substrates with conical shapes in order to obtain a large effective area above 2 keV. However, such telescopes tend to have poorer imaging quality due to approximation to conical shapes and misalignment of the two substrates. In order to reduce the degeneration in the imaging quality, we formed two reflectors from one thin substrate. The accuracy of the angle between two reflectors is determined by the tolerance of the mandrel used to form the thin foil substrate. At RIKEN we make the mandrel using a precision processing method. Here we present the results of our preliminary experiment on substrate forming.
机译:Walter I型光学器件通常使用共焦抛物面和双曲面反射器反射X射线两次,通常用于X射线天文学。这两个反射器通常由两个圆锥形的薄基板组成,以便在2 keV以上获得较大的有效面积。然而,由于近似于圆锥形状和两个基板的未对准,这样的望远镜趋于具有较差的成像质量。为了减少成像质量的下降,我们从一个薄基板上形成了两个反射镜。两个反射器之间的角度精度由用于形成薄箔基板的心轴的公差决定。在RIKEN,我们使用精密加工方法制造心轴。在这里,我们介绍了我们在基板成型方面的初步实验结果。

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