These days, research on the classification of neutron/gamma waveforms in scintillators using Pulse Shape Discrimination (PSD) techniques is a highly studied topic. Numerous methods have been explored to optimize this classification, with some of the most recent research being focused on machine learning techniques with excellent results. These approaches are mainly based on the use of one-dimensional Convolutional Neural Networks (CNNs). In this field, FPGAs with high-sampling rate Analog to Digital Converters (ADCs) have been used to perform this classification in real-time. In this work, we select a potential architecture and implement it with the help of the IntelFPGA OpenCL SDK environment. A shorter and C-like development of OpenCL enables a more straightforward modification and optimization of the network architecture. The main goal of this work is the evaluation of the needed resources and the obtained performance to prototype a complete solution in the FPGA. The FPGA design is generated as if it was connected to an ADC module streaming the data samples with the help of a Board Support Package developed for an IntelFPGA ARRIA10 available in an AMC module in an MTCA.4 platform. The prototyped solution has been integrated into EPICS using the Nominal Device Support (NDS) model currently being developed by ITER.
Real-Time Implementation of the Neutron/Gamma Discrimination in an FPGA-based DAQ MTCA Platform Using a Convolutional Neural Network
Astrain M.; Ruiz M.; Stephen A.V.; Sarwar R.; Carpeno A.; Esquembri S.; Murari A.; Belli F.; Riva M.; JET Contributors
Journal:
IEEE transactions on nuclear science (Online) 68 (8),
pp. 2173 - 2178
Year:
2021
ISTP Authors: Andrea Murari
Keywords: field-programmable gate array (FPGA), Convolutional neural network (CNN), deep learning (DL), neutron-gamma (NG) discrimination, OpenCL hardware description
Research Activitie: JOURNAL ARTICLES
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