Hamamatsu Photonics has expanded its range of semiconductor detectors featuring photon detection capability, with the introduction of the new S10362-33(X) series multipixel photon counter (MPPC).
The new device utilises a Geiger-mode avalanche photodiode structure for ultra-low-level light detection, and the active area has been increased almost 10 times from 1 mm² to 9 mm². The MPPC is easily connected to an external circuit for simple operation and is operated from a low voltage power supply (typically 70 V).
The S10362-33(X) series is suitable for a variety of applications, including positron emission tomography, high-energy physics, DNA sequencing, fluorescence measurement, nuclear medicine, point of care systems, drug discovery, medical diagnostic equipment and environmental analysis.
The new MPCC, with its active area of 3 x 3 mm, is available in three pixel counts – 900, 3600 or 14400 pixels.
Each pixel contains a quenching resistor so that simultaneous photon events can be counted separately and with a high degree of accuracy. The devices feature typical gain values from 250 000 to several million, depending on the specific pixel number. They also feature high photon detection efficiency to UV and blue light, with peak sensitivity at 400 nm, making them suitable for scintillator readout.
Hamamatsu also offers a compact MPPC module, the C10507-33(X) series. The module consists of an MPPC device, current-to-voltage converter circuit, high-voltage power supply circuit, high-speed comparator circuit, counter circuit and microprocessor. The threshold level for photon detection can be adjusted on a PC, which connects to the module via USB interface.
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