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MCP成像探测器前端电子学增益补偿

窦双团 付利平 贾楠 王天放

窦双团, 付利平, 贾楠, 王天放. MCP成像探测器前端电子学增益补偿[J]. 应用光学, 2022, 43(6): 1165-1174. doi: 10.5768/JAO202243.0604017
引用本文: 窦双团, 付利平, 贾楠, 王天放. MCP成像探测器前端电子学增益补偿[J]. 应用光学, 2022, 43(6): 1165-1174. doi: 10.5768/JAO202243.0604017
DOU Shuangtuan, FU Liping, JIA Nan, WANG Tianfang. Research on front-end electronics gain compensation of MCP imaging detector[J]. Journal of Applied Optics, 2022, 43(6): 1165-1174. doi: 10.5768/JAO202243.0604017
Citation: DOU Shuangtuan, FU Liping, JIA Nan, WANG Tianfang. Research on front-end electronics gain compensation of MCP imaging detector[J]. Journal of Applied Optics, 2022, 43(6): 1165-1174. doi: 10.5768/JAO202243.0604017

MCP成像探测器前端电子学增益补偿

doi: 10.5768/JAO202243.0604017
基金项目: 国家自然科学基金(42174226, 41874187)
详细信息
    作者简介:

    窦双团(1992—),男,博士研究生,主要从事真空紫外光学遥感单光子成像探测技术研究。E-mail:doushuangtuan@163.com

    通讯作者:

    付利平(1972—),女,研究员,博士生导师,主要从事真空紫外光学遥感研究。E-mail:fuliping@nssc.ac.cn

  • 中图分类号: TN366

Research on front-end electronics gain compensation of MCP imaging detector

  • 摘要: 基于微通道板电子倍增电荷分割型阳极的成像探测器常用于行星大气、气辉等微弱信号探测。针对探测器读出电路增益不相等导致探测器成像产生畸变的问题,利用理论分析结合MATLAB仿真揭示了不同畸变图像的形成机制,在该基础上提出了一种探测器读出电路增益补偿方法减小探测器成像畸变。通过MATLAB仿真和实验测试结果表明该文提出的方法能够有效减小由于读出电路增益不相等导致的探测器成像畸变。
  • 图  1  WSA阳极不同电极结构示意图

    Fig.  1  Schematic diagram of different electrode structures in WSA anode

    图  2  读出电路信号传输模型和波形示意图

    Fig.  2  Signal transmission model of readout circuit and waveform diagram

    图  3  积分电容和整形阶数对输出准高斯脉冲峰值的影响

    Fig.  3  Effects of integral capacitance and shaping orders on quasi-Gaussian pulse peak

    图  4  整形时间$ {\tau }_{i} $和整形阶数n对读出电路输出准高斯脉冲峰值相位的影响

    Fig.  4  Effects of shaping time ${\tau _i}$ and shaping order n on peak phase of quasi-Gaussian pulse output in readout circuit

    图  5  3路读出电路增益互不相等造成的探测器图像畸变

    Fig.  5  Detector image distortion caused by unequal gain of three readout circuits

    图  6  读出单路2路增益相等,第3路增益不等于其他2路导致的图像畸变

    Fig.  6  Detector image distortion under conditions of gain of two channels of readout circuit is equal, and gain of the third channel is not equal to the other two channels

    图  7  电荷注入原理图

    Fig.  7  Schematic diagram of charge injection

    图  8  探测器读出电路增益校准方案

    Fig.  8  Schematic diagram of gain calibration scheme of detector readout circuit

    图  9  读出电路经过增益校准补偿后的不同位置电子云质心坐标解码图

    Fig.  9  Decoded diagram of electron cloud centroid coordinates at different locations after gain calibration compensation of readout circuit

    图  10  探测器的读出电路的增益不相等时的畸变图像

    Fig.  10  Distorted image when gain of detector readout circuit is not equal

    图  11  增益补偿后的正常图像

    Fig.  11  Normal image after gain compensation

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出版历程
  • 收稿日期:  2022-08-30
  • 修回日期:  2022-10-13
  • 刊出日期:  2022-11-14

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