For the demand of high-throughput and high-performance neutron detection in high-energy physics experiments,a composite neutron imaging electronics system based on CMOS image sensor is proposed in this paper.The system adopts Kintex-7 series FPGA as the core device for system logic processing,and it utilizes the fast response of SiPM to provide shutter triggering for the CMOS image sensor to expose the neutron spot projected by the fiber optical taper.The coarse position information provided by the SiPM is to determine the region of interest of CMOS sensor for readout,and the readout data is transferred to the host computer for display and analysis.The results revealed that the CMOS sensor with the smallest pixel unit size of 28 μm×28 μm in the system is capable of imaging holes with an aperture diameter of 200 µm,with a maximum imaging offset of 28 μm and a maximum count rate of 82 kHz,which enables high-efficiency neutron detection.
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