Search

Your search keyword '"Salgado, William Luna"' showing total 20 results
Start Over Author "Salgado, William Luna" Publication Year Range Last 50 years
20 results on '"Salgado, William Luna"'

20. A novel radioactive particle tracking algorithm based on Deep Rectifier Neural Network

Author

Sophia de Freitas Dam, Roos, Carvalho dos Santos, Marcelo, Moreira do Desterro, Filipe Santana, Salgado, William Luna, Schirru, Roberto, and Salgado, César Marques

Abstract

Radioactive particle tracking (RPT) is a minimally invasive nuclear technique that tracks a radioactive particle inside a volume of interest by means of a mathematical location algorithm. During the past decades, many algorithms have been developed including ones based on artificial intelligence techniques. In this study, RPT technique is applied in a simulated test section that employs a simplified mixer filled with concrete, six scintillator detectors and a 137Cs radioactive particle emitting gamma rays of 662 keV. The test section was developed using MCNPX code, which is a mathematical code based on Monte Carlo simulation, and 3516 different radioactive particle positions (x,y,z) were simulated. Novelty of this paper is the use of a location algorithm based on a deep learning model, more specifically a 6-layers deep rectifier neural network (DRNN), in which hyperparameters were defined using a Bayesian optimization method. DRNN is a type of deep feedforward neural network that substitutes the usual sigmoid based activation functions, traditionally used in vanilla Multilayer Perceptron Networks, for rectified activation functions. Results show the great accuracy of the DRNN in a RPT tracking system. Root mean squared error for x, y and coordinates of the radioactive particle is, respectively, 0.03064, 0.02523 and 0.07653.

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results