Double-time-step photomultiplier

Abstract

The invention discloses a double-time-step photomultiplier, and relates to the technical field of photoelectric detection. The double-time-step photomultiplier device comprises a light guide module used for detecting photons, a communication module, a signal processing module and a signal output module, wherein the light guide module comprises a plurality of photoelectric pixel units, the communication module determines communication addresses of the light guide pixel units, and the light guide module comprises a light guide array formed by the plurality of light guide pixel units; the communication module comprises a communication address unit and a connecting line unit; the signal processing module comprises a control unit, an ADC processing unit and a TDC calculation unit; and the signal output module comprises a comparator, a storage bar and an output port. According to the invention, photon signals can be converted into electric signals, energy information and time information ofthe output electric signals can be calculated, photon detection information and photon position information of the whole photomultiplier can be read out, and the photomultiplier can be widely appliedto a double-time-step photoelectronic imaging system.

Description

technical field [0001] The invention relates to the technical field of photoelectric detection, in particular to a dual-time step photomultiplier device. Background technique [0002] For low-flux photon detection, a traditional photomultiplier tube (Photo Multiplier Tube, hereinafter referred to as PMT) composed of a photocathode, a photoanode and multiple dynodes is mainly used. The traditional photomultiplier device PMT has high gain, low dark current and good linearity, but the size of this device is large, the operating voltage is high and the cost is high. [0003] A silicon-based avalanche breakdown device Silicon photomultiplier (Silicon photomultiplier, hereinafter referred to as SiPM) is a photodetector including an avalanche diode and the same number of quenching resistors connected in series. There are two working modes of avalanche diodes: normal mode and Geiger mode. When the bias voltage is less than the breakdown voltage, the avalanche diode works in the no...

AI Technical Summary

Problems solved by technology

In practical applications, due to the lack of peripheral circuits of photodetectors, the calculation of energy information and time information of electrical signals cannot be quickly realized, and signal retention often occurs, and the time for processing signals is also longer. Peripheral circuits will not only increase system noise, but also reduce system space utilization, resulting in waste of space

Images