In this work, we report on the feasibility of a silicon photomultiplier (SiPM) for optically stimulated luminescence dosimeter (OSLD) application. In particular, to assess SiPMs as a viable technology for OSLD, we investigated the SiPM response to OSL detection in terms of microcell size, excess voltage ($V_{\mathrm{ex}}$), and photon threshold-levels. Furthermore, the dose response was explored to highlight some of the benefits and limitations of relying on SiPMs in OSL detection compared to using the conventional reader based on photomultiplier tubes (PMTs). SiPMs tested in this work were based on the Hamamatsu S13360-series with the pixel area of 3 $\times$ 3 mm² and microcell pitches of $25\mathrm{\mu }\mathrm{m}$, $50\mathrm{\mu }\mathrm{m}$, and $75\mathrm{\mu }\mathrm{m}$. The material used for the OSL detection is based on Al₂O₃:C and the measurements were carried out using a Risø TL/OSL reader system with the existing PMT replaced with a customized SiPM readout module. The results showed that SiPMs exhibit optimal performances at $V_{\mathrm{ex}}$ of 5 V, 3 V, and 3 V for $25\mathrm{\mu }\mathrm{m}$, $50\mathrm{\mu }\mathrm{m}$, and $75\mathrm{\mu }\mathrm{m}$, respectively. We also demonstrated that the dose responses in three SiPMs are nearly linear for doses below 1 Gy and found the minimal detectable doses as 23 mGy, 20 mGy, and 11 mGy for $25\mathrm{\mu }\mathrm{m}$, $50\mathrm{\mu }\mathrm{m}$, and $75\mathrm{\mu }\mathrm{m}$, respectively. Finally, it was shown that the detection sensitivity in the OSL signal fluctuates by nearly 5% for a temperature change of about 0.5 °C in an SiPM.

在这项工作中，我们报告了硅光电倍增管（SiPM）用于光激发发光剂量计（OSLD）应用的可行性。特别是，为了评估SiPM作为OSLD的可行技术，我们从微单元尺寸，过电压（$V_{\mathrm{前}}$）和光子阈值水平。此外，与使用基于光电倍增管（PMT）的常规读取器相比，探索了剂量响应以突出在OSL检测中依赖SiPM的一些好处和局限性。在这项工作中测试的SiPM基于Hamamatsu S13360系列，像素面积为3$\times$3 mm ²和微小区间距$25\mathrm{\mu }\mathrm{米}$， $50\mathrm{\mu }\mathrm{米}$和 $75\mathrm{\mu }\mathrm{米}$。用于OSL检测的材料基于Al ₂ O ₃：C，并且使用RisøTL / OSL阅读器系统进行了测量，而现有的PMT被定制的SiPM读出模块代替。结果表明，SiPM表现出最佳的性能$V_{\mathrm{前}}$ 对于5 V，3 V和3 V $25\mathrm{\mu }\mathrm{米}$， $50\mathrm{\mu }\mathrm{米}$和 $75\mathrm{\mu }\mathrm{米}$， 分别。我们还证明，对于低于1 Gy的剂量，三种SiPM中的剂量响应几乎是线性的，并且发现最低可检测剂量为23 mGy，20 mGy和11 mGy。$25\mathrm{\mu }\mathrm{米}$， $50\mathrm{\mu }\mathrm{米}$和 $75\mathrm{\mu }\mathrm{米}$， 分别。最后，结果表明，对于SiPM中约0.5°C的温度变化，OSL信号中的检测灵敏度波动近5％。