The resolution estimation of wedge and strip anodes.
The resolution estimation of wedge and strip anodes.
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DOI：
10.1063/1.4729117
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发表时间：
2012-09
期刊：
影响因子：
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通讯作者：
Hao Yang;Bao-sheng Zhao;Yong’an Liu;Qiu-rong Yan;Hui-jun Hu
中科院分区：
文献类型：
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作者：
Hao Yang;Bao-sheng Zhao;Yong’an Liu;Qiu-rong Yan;Hui-jun Hu
提出了一种新的基于单光子成像构型的楔形和条形阳极分辨率估计方法。根据阈值原理，从理论上推导了极限分辨率估计方程。讨论了电荷云与被覆盖电极的关系，并计算了当量直径数。在存在噪声的情况下，给出了位置偏差幅度或半高宽的解析方程。讨论了位置偏差幅度与总电荷偏差幅度之间的关系。提供了位置偏差幅度相对于位置的恒定性。对这些方程的计算结果进行了讨论。由方程可知，空间分辨率受探测系统结构和噪声的影响。这些结论可能对未来光子成像仪的设计和性能改进有一定的参考价值。
A new resolution estimation method for wedge and strip anode based on the single photon imaging configuration is provided. The limiting resolution estimation equation is deduced theoretically according to the threshold principle. The relation between the charge cloud and the covered electrodes is discussed, and the equivalent diameter number is calculated. The resolution equation for the position deviation amplitude or FWHM is provided if noise exists. The relation between the position deviation amplitude and the total charge deviation amplitudes is discussed. The constancy of the position deviation amplitudes versus positions is provided. The results calculated from these equations are discussed. According to the equations, it is indicated that the spatial resolution is affected by the detection system configuration and noise. These conclusions may be useful for the designing and performance improvement of future photon imagers.