小型智能程控SiPM电源设计与验证

doi:10.11889/j.0253-3219.2020.hjs.43.060402

Nuclear Techniques ›› 2020, Vol. 43 ›› Issue (6): 60402-060402.doi: 10.11889/j.0253-3219.2020.hjs.43.060402

• NUCLEAR ELECTRONICS AND INSTRUMENTATION • Previous Articles Next Articles

Design and verification of small intelligent programmable SiPM power supply

Huiliang HOU^1,²,Yuefeng HUANG¹(),Maosong CHENG¹,Zhimin DAI¹

^1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
^2.University of Chinese Academy of Sciences, Beijing 100049, China

Received:2020-01-07 Revised:2020-03-05 Online:2020-06-15 Published:2020-06-12
Contact: Yuefeng HUANG E-mail:hyuefeng@sinap.ac.cn
About author:HOU Huiliang, male, born in 1993, graduated from Chengdu University of Technology in 2017, master student, focusing on nuclear measurement and control technology
Supported by:
National Natural Science Foundation of China(11775290)

Abstract

Abstract: Background

As a new solid-state photosensor, silicon photomultiplier (SiPM) has high gain (10⁶), low power consumption (supply current is several μA), small size (several square milimeters), low operating voltage (less than 100 V) and other advantages. Compared with traditional photomultiplier tube, SiPM does not affected by magnetic fields. However, there is a disadvantage that the gain of SiPM is greatly affected by temperature, the gain will decrease by about 5×10⁵ for every 10 °C rise in temperature, which will have a greater impact on energy spectrum measurement and radiation imaging applications.

Purpose

This study aims to design and develop a small programmable SiPM power supply for temperature independent gain.

Methods

First of all, a high-voltage power supply module was designed for SiPM, making use of the gain regulation by voltage. Temperature sensor, DC-DC power chip, etc., were integrated into an ARM-based micro control unit (MCU) module for automatic SiPM power supply. Then the effect of voltage compensation to gain in the temperature range of 5 ℃ to 40 ℃ was verified by using digital multi-channel analyzer with comparison of the channels of full energy peak on the energy spectrum of ²⁴¹Am source.

Results

The channel of full energy peak which indicates the gain of the SiPM is stable by using the voltage compensation (gain drift correction), and the maximum drift of the SiPM gain from 5 ℃ to 40 ℃ decreases from 87.3% before compensation to 2.76%.

Conclusions

Gain drift correction achieved by a small intelligent programmable SiPM power supply broadens the scope of SiPM application.

Key words: Silicon photomultiplier, Gain drift correction, γ spectrometry

Huiliang HOU, Yuefeng HUANG, Maosong CHENG, Zhimin DAI. Design and verification of small intelligent programmable SiPM power supply[J].Nuclear Techniques, 2020, 43(6): 60402-060402.

Figures/Tables 10

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Design and verification of small intelligent programmable SiPM power supply

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