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Performance of a Compton telescope using position-sensitive germanium detectors

机译:使用位置感应锗探测器的康普顿望远镜的性能

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We describe the use of position sensitive planar germanium detectors in a Compton telescope/camera. This Compton telescope achieves the very good energy resolution (/spl Delta/Etotal>4 keV) associated with germanium detectors and good position resolution (2 mm). By combining a 25/spl times/25 strip (2 mm pitch) detector with a 5/spl times/5 strip detector (9 mm pitch), we created a telescope with 625/spl times/25 pixel combinations. Using this detector pair, we have reconstructed positions with an angular resolution of 1 degree FWHM and 15 arcminute centroiding. Point sources are identified with less than 100 full energy events with simple image reconstruction. The angular resolution is currently limited by the uncertainty in the absolute position of the detectors and the size of the second detector pixels. We show the expected angular resolution when the pixel size no longer dominates the angular resolution and discuss proposed applications.
机译:我们描述了在康普顿望远镜/相机中使用位置敏感的平面锗探测器。这款康普顿望远镜实现了与锗探测器相关的非常好的能量分辨率(/ spl Delta / Etotal> 4 keV)和良好的位置分辨率(2 mm)。通过将25 / spl次/ 25条(2毫米间距)检测器与5 / spl次/ 5条的检测器(9毫米间距)相结合,我们创建了具有625 / spl次/ 25像素组合的望远镜。使用该检测器对,我们重建了具有1度半高全宽和15弧分质心的角分辨率的位置。通过简单的图像重建,可以识别少于100个全能量事件的点源。当前,角分辨率受到检测器的绝对位置的不确定性和第二检测器像素的大小的限制。当像素大小不再主导角分辨率时,我们将显示预期的角分辨率,并讨论拟议的应用。

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