Research And Develop On The Integration Of The Plastic Scintillator Detector

Integration of plastic scintillation detector is the detector which integrates analog signal processing module and digital module into an organic whole in the stucture; On the function, it makes the analog signal amplification, forming, and put it into a digital signal transmission over a long distance, Finally it can achieve real-time counting rate measurement.Abroad at present, has successfully developed a high degree of integration, intelligence and signal transmission of plastic scintillation detector, strong anti-jamming capability and the domestic research on integration technology of plastic scintillation detector relative lag,In addition, the plastic scintillation detector of gamma ray detection efficiency has incomparable advantage over other detector, in order to make up for the domestic plastic scintillation detector integration technology research and development level, therefore, is extremely necessary to independently developed highly integrated plastic scintillation detector.This thesis is based on the traditional plastic scintillation detector principle, structure and mature nuclear electronics technology to research and design the integration of plastic scintillation First, the basic working principle of plastic scintillation detector is introduced, and then puts forward the integration of the signal transmission scheme, and according to the scheme for detector of the shell and internal signal processing circuit were adapted to the integrated structure design.And then also made clear the detector integration of the relevant technical indexes, and fitting parameters selection requirements. The third chapter is the core of this paper, detailed introduces the detector signal processing circuit, it mainly includes analog signal processing circuit and digital signal processing circuit module, which is the key technology of integration research and development of plastic detector, I have finished designing of the circuit, debugging and testing etc during the process of research and development. In addition, this paper also exponds on the detector fixed installation plan(including the probe mounting bracket and fixed wiring outside the mechanical design) and the external communication protocol.Finally,this paper designed a integrated detector prototype to carry out the performance tests and application experiments,such as background count rate, stability and the axial uniformity, plateau curve, etc. By getting a lot of experimental data analysis:The probe design scheme is reasonable and reliable, and reached the design requirements of related technical indicators.so,the detector is an integrated plastic scintillation detector with a high precision and good stability.The above research work for subsequent integration detector performance parameter optimization work laid a solid foundation.