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Hybrid Photomultiplier Detector Assembly

Hybrid Photomultiplier Detector Assembly

The PMA Hybrid is a compact, single photon sensitive detector based on a fast hybrid photomultiplier tube (R10467 from Hamamatsu) with Peltier cooler to reduce the dark count rate. It features two signal outputs: a negative voltage pulse for timing and counting applications and an analog positive output voltage proportional to the count rate that can be connected to e.g. A/D converters. The detector assembly includes a high voltage power supply, a pre-amplifier with overload protection, and an emergency shut down procedure if the detector count rate reaches a critical limit. The PMA Hybrid is encased in a nickel coated aluminum housing to achieve high level of RF shielding and protection against interference from other devices. The built-in pre-amplifier is specially optimized for timing sensitive applications such as Time-Correlated Single Photon Counting (TCSPC). The output signal of the PMA Hybrid can be accessed through a standard 50 Ohms SMA connector.

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