Tetris-inspired detector with neural network for radiation mapping.

Autor: Okabe R; Quantum Measurement Group, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA. rokabe@mit.edu.; Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA. rokabe@mit.edu., Xue S; Quantum Measurement Group, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.; Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.; Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA., Vavrek JR; Applied Nuclear Physics Program, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA., Yu J; Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA., Pavlovsky R; Applied Nuclear Physics Program, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA., Negut V; Applied Nuclear Physics Program, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA., Quiter BJ; Applied Nuclear Physics Program, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA., Cates JW; Applied Nuclear Physics Program, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA., Liu T; Quantum Measurement Group, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.; Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA., Forget B; Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA., Jegelka S; Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA., Kohse G; Nuclear Reactor Laboratory, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA., Hu LW; Nuclear Reactor Laboratory, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA. lwhu@mit.edu., Li M; Quantum Measurement Group, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA. mingda@mit.edu.; Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA. mingda@mit.edu.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 Apr 09; Vol. 15 (1), pp. 3061. Date of Electronic Publication: 2024 Apr 09.
DOI: 10.1038/s41467-024-47338-w
Abstrakt: Radiation mapping has attracted widespread research attention and increased public concerns on environmental monitoring. Regarding materials and their configurations, radiation detectors have been developed to identify the position and strength of the radioactive sources. However, due to the complex mechanisms of radiation-matter interaction and data limitation, high-performance and low-cost radiation mapping is still challenging. Here, we present a radiation mapping framework using Tetris-inspired detector pixels. Applying inter-pixel padding for enhancing contrast between pixels and neural networks trained with Monte Carlo (MC) simulation data, a detector with as few as four pixels can achieve high-resolution directional prediction. A moving detector with Maximum a Posteriori (MAP) further achieved radiation position localization. Field testing with a simple detector has verified the capability of the MAP method for source localization. Our framework offers an avenue for high-quality radiation mapping with simple detector configurations and is anticipated to be deployed for real-world radiation detection.
(© 2024. The Author(s).)
Databáze: MEDLINE
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