Nuclear Spectrum Acquisition System Based On Blind Deconvolution Algorithm

Nuclear spectrum acquisition system is one of the most important part of the nuclear physics experimental device, its accuracy affect the subsequent progress of the experiment. In this paper, we will introduce blind deconvolution algorithm, and draw it into the measurement of nuclear energy spectrum, design a comprehensive set of data acquisition and processing systems. The system using SOPC-based embedded FPGA as the main controller, it consist of a high-speed ADC continuous sampling nuclear signal, fast data transfer to the PC with USB2.0interface, and online processing and display in LabⅥEW software. The results show that the algorithm can remove the accumulation of the nuclear pulse signal, and can remove the baseline, and thereby restore the true nuclear pulse signal. The system has advantages of high transmission speed, online processing and display.In chapter Ⅰ, describe the basis and significance of the thesis topics, and elaborate the various nuclear power spectrum acquisition methods and their advantages and disadvantages. Chapter Ⅱ, the system design theory part, introduce blind deconvolution algorithm nuclear energy spectrum acquisition system, as well as blind deconvolution algorithm principle. Chapter Ⅲ, the hardware design section, describes the system hardware selection, hardware connections. Chapter IV software design section, describes the required software programming procedures, including the code of FGPA USB firmware and PC LabⅥEW programming. Chapter V, simulation part, validate blind Deconvolution for the feasibility and effectiveness of nuclear energy spectrum acquisition system. Chapter VI, experimental part, collect signal generated by the signal generator, and to verify the effect of the blind deconvolution algorithm. Chapter Ⅶ Summary and Outlook section, discusses the design of the nuclear spectrum to obtain the advantages and disadvantages of the system, resulting in further improvements.