论文标题
511-CAM任务：一个尖的511 kev伽马射线望远镜，其焦平面检测器由堆叠的过渡边缘传感器微层流阵列制成
The 511-CAM Mission: A Pointed 511 keV Gamma-Ray Telescope with a Focal Plane Detector Made of Stacked Transition Edge Sensor Microcalorimeter Arrays
论文作者
论文摘要
来自银河中心区域的511 keV伽马射线发射可能完全或部分源自带有星际介质的电子的暗物质颗粒上的正上音。另外，正面可以由天体物理来源创建，涉及仅标准模型物理学。我们在这里描述了一个511 KEV任务的新概念，称为511-CAM（511 KEV伽玛射线摄像机使用微含量计），将聚焦的伽玛射线光学器件与焦点平面中的一堆过渡边缘传感器（TES）微氧计阵列相结合。 511-CAM检测器组件预计的511 KEV能量分辨率为390 eV，最大宽度最高（FWHM），并且在基于最先进的GE Compton望远镜的性能上提高了至少11倍。将这种前所未有的能量分辨率与Laue Lens提供的亚肢体角度分辨率相结合或传递光学元件可以通过发现和表征点源来识别511 KeV排放的起源做出重大贡献。
The 511 keV gamma-ray emission from the galactic center region may fully or partially originate from the annihilation of positrons from dark matter particles with electrons from the interstellar medium. Alternatively, the positrons could be created by astrophysical sources, involving exclusively standard model physics. We describe here a new concept for a 511 keV mission called 511-CAM (511 keV gamma-ray CAmera using Micro-calorimeters) that combines focusing gamma-ray optics with a stack of Transition Edge Sensor (TES) microcalorimeter arrays in the focal plane. The 511-CAM detector assembly has a projected 511 keV energy resolution of 390 eV Full Width Half Maximum (FWHM) or better, and improves by a factor of at least 11 on the performance of state-of-the-art Ge-based Compton telescopes. Combining this unprecedented energy resolution with sub-arcmin angular resolutions afforded by Laue lens or channeling optics could make substantial contributions to identifying the origin of the 511 keV emission by discovering and characterizing point sources and measuring line-of-sight velocities of the emitting plasmas.
