Precision analysis of the photomultiplier response to ultra low signals
Precision analysis of the photomultiplier response to ultra low signals
复制标题
光电倍增管对超低信号响应的精确分析
DOI：
10.1016/j.nima.2017.07.053
复制
发表时间：
2016
影响因子：
1.4
通讯作者：
P. Degtiarenko
中科院分区：
文献类型：
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作者：
P. Degtiarenko
本文提出了一种新的计算模型，用于描述在弱光条件下测量的光子探测器响应函数，并给出了利用参数化模型方程成功描述的光电倍增管信号幅度分布的实例。在扩展到以前已知的近似，新的模型描述了潜在的离散统计行为的光电子级联倍增过程中的光子探测器与复杂的非均匀增益结构的第一倍增电极。该模型的重要特点包括能够代表真正的单光电子光谱从不同的光电倍增管与各种参数化的形状，反映了在设计和检测器的各个参数的可变性。新的软件工具可用于评估探测器的性能，响应和效率参数，这些参数可用于各种应用，包括超低背景实验，如寻找暗物质和稀有衰变，地下中微子研究，优化切伦科夫光探测器的操作，帮助探测器选择程序和实验模拟。
A new computational model for the description of the photon detector response functions measured in conditions of low light is presented, together with examples of the observed photomultiplier signal amplitude distributions, successfully described using the parameterized model equation. In extension to the previously known approximations, the new model describes the underlying discrete statistical behavior of the photoelectron cascade multiplication processes in photon detectors with complex non-uniform gain structure of the first dynode. Important features of the model include the ability to represent the true single-photoelectron spectra from different photomultipliers with a variety of parameterized shapes, reflecting the variability in the design and in the individual parameters of the detectors. The new software tool is available for evaluation of the detectors’ performance, response, and efficiency parameters that may be used in various applications including the ultra low background experiments such as the searches for Dark Matter and rare decays, underground neutrino studies, optimizing operations of the Cherenkov light detectors, help in the detector selection procedures, and in the experiment simulations.