论文标题
科学X射线CMOS摄像机的设计和测试结果
Design and test results of scientific X-ray CMOS cameras
论文作者
论文摘要
近年来，科学CMO（SCMOS）传感器发现在X射线检测中的应用增加，包括X射线天文观测。为了检查SCMOS传感器的性能，我们基于SCMOS传感器开发了X射线相机。使用SCMOS传感器分别为2 cm * 2 cm * 2 cm * 6 cm的SCMOS传感器开发了两个相机CNX22和CNX 66。本文介绍了相机的设计。 CNX22摄像头的帧速率为48 fps，而CNX66的帧速率为20 fps，将来可以将其提高到100 fps。使用Peltier冷却器设备，对于CNX22的SCMOS传感器的工作温度可以达到-20C，CNX66的工作温度可以达到-20C。除了保存原始图像的常用模式外，相机还提供了一种实时提取X射线事件并存储其信息的模式，这大大减少了数据存储和离线分析工作的需求。对于这两个摄像机，使用单像素事件在5.9 KEV处的能量分辨率可以达到200 eV。这些相机适用于实验室中的X射线光谱应用和空间X射线望远镜的校准。
In recent years, scientific CMOS (sCMOS) sensors have found increasing applications to X-ray detection, including X-ray astronomical observations. In order to examine the performance of sCMOS sensors, we have developed X-ray cameras based on sCMOS sensors. Two cameras, CNX22 and CNX 66, have been developed using sCMOS sensors with a photosensitive area of 2 cm * 2 cm and 6 cm * 6 cm, respectively. The designs of the cameras are presented in this paper. The CNX22 camera has a frame rate of 48 fps, whereas CNX66 has a frame rate of currently 20 fps, that can be boosted to 100 fps in the future. The operating temperature of the sCMOS sensor can reach to -20C for CNX22 and -30C for CNX66 with a peltier cooler device. In addition to the commonly used mode of saving original images, the cameras provide a mode of real-time extraction of X-ray events and storage their information, which significantly reduces the requirement for data storage and offline analysis work. For both cameras, the energy resolutions can reach less than 200 eV at 5.9 keV using single-pixel events. These cameras are suitable for X-ray spectroscopy applications in laboratories and calibration for the space X-ray telescopes.
