SiPM gain control system with temperature self-adaption function and control method thereof

A gain control and adaptive technology, applied in general control systems, control/regulation systems, program control, etc., can solve the problems of backward SiPM gain stabilization control technology and electrical stress damage of SiPM devices, achieving small size and eliminating stress damage. , the effect of high data calculation efficiency

Inactive Publication Date: 2018-07-27
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, in engineering applications such as particle detection and nuclear medicine detection based on SiPM, the gain stabilization control technology of SiPM is relatively backward, and manual adjustment is mostly used to control the bias voltage of SiPM; stress damage

Method used

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  • SiPM gain control system with temperature self-adaption function and control method thereof
  • SiPM gain control system with temperature self-adaption function and control method thereof
  • SiPM gain control system with temperature self-adaption function and control method thereof

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Embodiment Construction

[0028] Such as figure 1 As shown, the control system of this embodiment consists of three parts: temperature acquisition, FPGA data processing and algorithm control, and target bias voltage output control. A temperature adaptive SiPM gain control system, the system includes a temperature sensor Pt100 connected in sequence, a temperature measurement circuit, an A / D conversion circuit, a low-pass filter, an FPGA module, a D / A conversion circuit, a comparator and a field power module.

[0029] A temperature adaptive SiPM gain control method described in this embodiment, the method steps include:

[0030] (1) The temperature sensor Pt100 multi-distributed points collect the temperature signal T of SiPM t , and through the temperature measurement circuit the temperature signal T t converted to a voltage signal V t ;

[0031] (2) Voltage signal V t After being converted into a digital signal of the current temperature by the A / D conversion circuit, and then filtered by a low-p...

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Abstract

The invention relates to an SiPM gain control system with a temperature self-adaption function and a control method thereof, and belongs to the field of photoelectric and particle detection. The system includes a temperature sensor, a temperature measuring circuit, an A/D conversion circuit, an FPGA module, a D/A conversion circuit and a field power module which are sequentially connected. For thefact that a detector readout device SiPM is very sensitive to ambient temperature changes, the influences caused by temperature on SiPM gains are compensated for through a temperature self-adaption mode, and the validity of detected data is improved. The automatic control over SiPM bias voltage is achieved, the service life of the SiPM is greatly prolonged, the instantaneous impact of front-end electronics is eliminated, and a foundation is laid for long-term reliable application of the SiPM.

Description

technical field [0001] The invention relates to a temperature self-adaptive SiPM gain control system and a control method thereof, belonging to the field of photoelectric and particle detection. Background technique [0002] SiPM (Silicon Photo-multiplier, silicon photomultiplier detector) is a photodetection device used in the field of light detection that has gradually emerged in recent years. Compared with the traditional PMT (Photo multiplier tube, photomultiplier tube), SiPM has a volume Small, easy to develop into the form of a detector array; can work under low bias voltage, has good anti-magnetic field interference and mechanical shock resistance; has high gain, high photon detection efficiency, fast response, and excellent time resolution and Wide spectral response range and other advantages. Its disadvantage is that it is very sensitive to changes in ambient temperature, which will cause the SiPM gain to drift. In particle detection applications, the detection dat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/46G05B19/042
CPCG05F1/46G05B19/042
Inventor 胡向宇赵振栋陶文泽李斌
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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