论文标题
船长CCD的智能阅读:在感兴趣的地区达到子电子噪声水平
Smart-readout of the Skipper-CCD: Achieving Sub-electron Noise Levels in Regions of Interest
论文作者
论文摘要
船长CCD是一种特殊的电荷耦合设备,可以通过平均相同电荷的独立测量值将读数噪声降低到亚电子水平。因此,可以通过计算确切的电子数来确定像素中的电荷。总读数时间与每个像素中电荷的测量值成正比。对于某些应用,这次可能太长了;但是,研究人员通常仅对像素矩阵内的某些区域感兴趣。在本文中,我们介绍了一种智能船长读数技术的开发,该技术允许用户指定CCD矩阵感兴趣的区域,其中可以采取任意(高)相同费用的测量值来获得所需的噪声水平,并且在这些区域中执行的测量值少于研究人员,因此减少了总读取时间。
The skipper CCD is a special type of charge coupled device in which the readout noise can be reduced to sub-electron levels by averaging independent measurements of the same charge. Thus the charge in the pixels can be determined by counting the exact number of electrons. The total readout time is proportional to the number of measurements of the charge in each pixel. For some applications this time may be too long; however, researchers usually are interested only on certain region within the matrix of pixels. In this paper we present the development of a smart skipper readout technique that allows the user to specify regions of interest of the CCD matrix where an arbitrary (high) number of measurements of the same charge can taken to obtain the desired noise level, and far less measurements are performed in those regions that are less interesting to the researcher, therefore reducing the total readout time.