首页> 中文期刊> 《等离子体科学和技术:英文版》 >A real-time neutron-gamma discriminator based on the support vector machine method for the time-of-flight neutron spectrometer

A real-time neutron-gamma discriminator based on the support vector machine method for the time-of-flight neutron spectrometer

         

摘要

A new neutron-gamma discriminator based on the support vector machine(SVM) method is proposed to improve the performance of the time-of-flight neutron spectrometer. The neutron detector is an EJ-299-33 plastic scintillator with pulse-shape discrimination(PSD) property. The SVM algorithm is implemented in field programmable gate array(FPGA) to carry out the real-time sifting of neutrons in neutron-gamma mixed radiation fields. This study compares the ability of the pulse gradient analysis method and the SVM method. The results show that this SVM discriminator can provide a better discrimination accuracy of 99.1%. The accuracy and performance of the SVM discriminator based on FPGA have been evaluated in the experiments. It can get a figure of merit of 1.30.

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