Characterisation of the temperature-dependent dark rate of Hamamatsu R7081-100 10" photomultiplier tubes
Characterisation of the temperature-dependent dark rate of Hamamatsu R7081-100 10" photomultiplier tubes
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Hamamatsu R7081-100 10" 光电倍增管的温度相关暗率表征
DOI：
10.1088/1748-0221/18/08/p08017
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发表时间：
2023
影响因子：
1.3
通讯作者：
Wilson S
中科院分区：
文献类型：
--
作者：
Wilson S
暗噪声是光电倍增管（PMT）中的主要背景，光电倍增管通常用于填充液体的粒子探测器中，用于单光子探测以观察粒子相互作用的结果。对暗噪声的主要贡献是来自光阴极的电子发射。Hamamatsu R7081-100光电倍增管的暗噪声的特征在于温度和纯度控制水箱，并隔离了电子发射贡献。结果表明，光电倍增管的本征暗率不依赖于介质，但遵循Richardson的电子发射定律。有外部的贡献，整体观察到的PMT计数率确定，但固有的PMT暗率在水中的匹配，在空气中测量。
Dark noise is a dominant background in photomultiplier tubes (PMTs), which are commonly used in liquid-filled particle detectors for single-photon detection to see the results of particle interactions. A major contribution to dark noise is thermionic emission from the photocathode. The dark noise of Hamamatsu R7081-100 PMTs is characterised in a temperature and purity controlled water tank, with the thermionic emission contribution isolated. The results suggest that the intrinsic dark rate of PMTs does not depend on the medium, but does follow Richardson's law of thermionic emission. There are external contributions to the overall observed PMT count rate identified, but the intrinsic PMT dark rate in water matches that measured in air.