Article Dans Une Revue Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Année : 2025

A fast and reliable algorithm for the detection of low-radioactivity moving sources based upon an adaptive filter and a MACD estimator

Résumé

This paper introduces a novel method for detecting low-intensity changes in radiological activity regimes, which has been under development at CEA List since 2018. The method operates under a signal-to-noise ratio of approximately four in both numerical and experimental studies, with optimization and principle validation detailed herein. The procedure, which forgoes the use of radioisotopic spectral signatures in a controlled environment to meet the constraint of a reliable response time of approximately one second, primarily utilizes a real-time variation indicator. This indicator is analogous to the convergence-divergence of moving averages commonly employed in financial analysis. Furthermore, the article presents evidence from numerical simulations and experiments that this indicator yields figures of merit that are competitive with the state of the art when evaluated on a counting signal pre-filtered by an adaptive filter. This approach proves advantageous for two primary reasons: (i) it is more readily parametrizable, and (ii) its resilience against deviations between experimental nuclear counts and ideally modeled events drawn from Poisson distribution statistics is significantly enhanced.

Fichier principal
Vignette du fichier
article_JonathanDumazert_Nuclear Instruments and Methods_2025.pdf (1.66 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-05079163 , version 1 (12-06-2025)

Licence

Identifiants

Citer

Jonathan Dumazert, Mathieu Thévenin, Vladimir Kondrasovs, Kamel Benmahi, Gwenolé Corre, et al.. A fast and reliable algorithm for the detection of low-radioactivity moving sources based upon an adaptive filter and a MACD estimator. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2025, 1079, pp.170667. ⟨10.1016/j.nima.2025.170667⟩. ⟨hal-05079163⟩
625 Consultations
457 Téléchargements

Altmetric

Partager

  • More