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First characterization of the SPADnet sensor:a digital silicon photomultiplier for PET applications

机译:spaDnet传感器的首次表征:用于pET应用的数字硅光电倍增管

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摘要

Silicon Photomultipliers have the ability to replace photomultiplier tubes when used as light sensors in scintillation gamma-ray detectors. Their timing properties, compactness, and magnetic field compatibility make them interesting for use in Time-of-Flight Magnetic Resonance Imaging compatible Positron Emission Tomography. In this paper, we present a new fully digital Single Photon Avalanche Diode (SPAD) based detector fabricated in CMOS image sensor technology. It contains 16x8 pixels with a pitch of 610x571.2 μm2. The Dark Count Rate and the Photon Detection Probability of each SPAD has been measured and the homogeneity of these parameters in the entire 92000 SPAD array is shown. The sensor has been optically coupled to a single LYSO needle and a LYSO array. The scintillator crystal was irradiated with several gamma sources and the resulting images and energy spectra are presented.
机译:硅光电倍增管可用作闪烁伽马射线探测器中的光传感器时,可以替换光电倍增管。它们的定时特性,紧凑性和磁场兼容性使它们在与飞行时间磁共振成像兼容的正电子发射断层扫描中很有用。在本文中,我们介绍了一种采用CMOS图像传感器技术制造的新型全数字单光子雪崩二极管(SPAD)检测器。它包含16x8像素,间距为610x571.2μm2。测量了每个SPAD的暗计数率和光子检测概率,并显示了整个92000 SPAD阵列中这些参数的均一性。传感器已光学耦合到单个LYSO针和LYSO阵列。用几个伽玛射线源照射闪烁体晶体,并显示所得图像和能谱。

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