基于温度补偿的多通道MPPC增益稳定性及一致性研究

发布时间：2018-02-01 03:52

本文关键词： MPPC 温度补偿增益稳定性增益一致性二维位置分辨电子学读出数据采集　出处：《广西大学》2015年硕士论文　论文类型：学位论文

【摘要】：硅光电倍增管SiPM(silicon photomultiplier tubes)作为一种新型光电转换器件,与传统的光电倍增管PMT(photomultiplier tubes)相比有工作电压低、功耗小、集成度高、抗磁场等优点。多像素光子计数器MPPC(multi pixels-photon counter)作为SiPM中的一种,本文通过离线分析的方法测试了一种4×4通道MPPC (Hamamatsu,C11206-0404FB(X))模块的绝对增益,并与在线测试滨松(Hamamatsu)PMTR7725单光电子谱,进而求得其绝对增益的方法进行了比较。接着研究了MPPC增益随偏压、工作温度的变化关系,并通过加入温度补偿的办法保持了相对增益(电荷谱峰位)的稳定性。随后研究了MPPC各通道增益的差异性,然后通过调整各通道偏置电压实现了各个通道增益的一致性。在MPPC各个通道增益一致性和稳定性得到满足的情况下,此种MPPC可以很好地使用在闪烁体二维位置分辨探测器的读出电路中。总之,在探测器性能测试实验中,确定探测器以电压或电流脉冲形式读出对后续电子学电路的正确配置至关重要；对单光子不灵敏的光电探测器件,在测试其绝对增益等性能参数,离线允许的情况下,可以选择离线分析的办法；高参数示波器、数字化仪(Digitizer)、数据采集板卡作为数据采集(DAQ)硬件,搭配类似Labview等数据采集软件,不失为一种准确、方便的实验方法。
[Abstract]:Silicon photomultiplier tube SiPM(silicon photomultiplier is a new type of photoelectric conversion device. Compared with the traditional photomultiplier tube (PMT(photomultiplier), it has the advantages of low voltage, low power consumption and high integration. Multipixel photon counter (MPPC(multi pixels-photon counter) is one of the advantages of SiPM. In this paper, the absolute gain of a 4 脳 4 channel MPPC Hamamatsu C11206-0404FBX (X) module is tested by off-line analysis. The results are compared with the method of on-line measuring the PMTR7725 single photoelectron spectrum of Hamamatsuang, and then the absolute gain of the PMTR7725 is obtained. Then, the MPPC gain with bias voltage is studied. The stability of the relative gain (peak position of charge spectrum) is maintained by adding temperature compensation. Then the difference of gain in each channel of MPPC is studied. Then the gain consistency of each channel is realized by adjusting the bias voltage of each channel. When the gain consistency and stability of each channel of MPPC are satisfied. This kind of MPPC can be used well in the readout circuit of scintillator two-dimensional position resolution detector. Determining that the detector is read out in the form of voltage or current pulses is very important for the correct configuration of subsequent electronic circuits. For the single photon insensitive photodetector, the off-line analysis method can be chosen when the absolute gain and other performance parameters are tested, and the off-line analysis is allowed. High-parameter oscilloscope, digital instrument Digitizer, data acquisition board card as data acquisition DAQ hardware, with similar to Labview and other data acquisition software, it is a kind of accuracy. Convenient experimental method.
【学位授予单位】：广西大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN152

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