首页>
外国专利>
Temperature compensation circuit for silicon photomultipliers and other single photon counters
Temperature compensation circuit for silicon photomultipliers and other single photon counters
展开▼
机译:硅光电倍增管和其他单光子计数器的温度补偿电路
展开▼
页面导航
摘要
著录项
相似文献
摘要
A PET scanner (8) includes a ring of detector modules (10) encircling an imaging region (12). Each of the detector modules includes at least one detector pixel (24,34). Each detector pixel includes a scintillator (20, 30) optically coupled to one or more sensor APDs (54) that are biased in a breakdown region in a Geiger mode. The sensor APDs output a pulse in response to the light from the scintillator corresponding to a single incident radiation photon. A reference APD (26, 36) also biased in a break-down down region in a Geiger mode is optically shielded from light and outputs a temperature dependent signal. At least one temperature compensation circuit (40) adjusts a bias voltage applied to the sensor APDs based on the temperature dependent signal.
展开▼