用于Kaos谱仪的硅光电倍增器跟踪光纤探测器
A Tracking Fiber Detector based on Silicon Photomultipliers for the Kaos Spectrometer
摘要：
美因茨微波加速器MAMI的Kaos光谱仪正在研制一种跟踪探测器，它采用两米长的反射光纤，由硅光电倍增器（SiPM）读出。结果从原型设置使用2毫米方形光纤和大面积SiPM读出。这种组合的检测效率被测量为在83%和100%之间，这取决于SiPM幅度上的阈值。采用基于物理模型的蒙特卡罗模拟来提取SiPM器件的光子探测效率。
英文摘要：
A tracking detector based on two meters long scintillating fibers read out by silicon photomultipliers (SiPM) is being developed for the Kaos spectrometer at the Mainz Microtron MAMI. Results from a prototype setup using 2 mm square fibers and large area SiPM readout are presented. The detection efficiency of such a combination was measured to be between 83 and 100% depending on the threshold on the SiPM amplitude. A Monte Carlo simulation based on a physical model was employed in order to extract the photon detection efficiency of the SiPM devices.
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