A design methodology using signal-to-noise ratio for plastic scintillation detectors design and performance optimization.
A design methodology using signal-to-noise ratio for plastic scintillation detectors design and performance optimization.
复制标题
使用信噪比进行塑料闪烁探测器设计和性能优化的设计方法。
DOI：
10.1118/1.3231947
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发表时间：
2009
期刊：
影响因子：
3.8
通讯作者：
Gingras,Luc
中科院分区：
文献类型：
--
作者：
Lacroix,Frédéric;Beddar,ASam;Guillot,Mathieu;Beaulieu,Luc;Gingras,Luc
Purpose: The design of novel plastic scintillation detectors (PSDs) is impeded by the lack of a suitable framework to simulate and predict their performance. The authors propose to use the signal‐to‐noise ratio (SNR) to model the performance of PSDs that use charge‐coupled devices (CCDs) as photodetectors.Methods: In PSDs using CCDs, the SNR is inversely related to the normalized standard deviation of the dose measurement. Thus, optimizing the SNR directly optimizes the system's precision. In this work, a model of SNR as a function of the system parameters is derived for optical fiber‐based PSD systems. Furthermore, this proposed model is validated using experimental results. A formula for the efficiency of fiber coupling to CCDs is derived and used to simulate the performance of a PSD under varying magnifications.Results: The proposed model is shown to simulate the experimental performance of an actual PSD to a suitable degree of accuracy under various conditions.Conclusions: The SNR constitutes a useful tool to simulate the dosimetric precision of PSDs. Using the SNR model, recommendations for the design and optimization of PSDs are provided. Using the same framework, recommendations for non‐fiber‐based PSDs are also provided.
