Ongoing advancement of free-moving radiation imaging and mapping

Brian J. Quiter; Mark S. Bandstra; Joshua W. Cates; Reynold J. Cooper; Joseph C. Curtis; Daniel Hellfeld; Tenzing H. Y. Joshi; Ryan T. Pavlovsky; Emil Rofors; Marco Salathe; Jayson R. Vavrek; Kai Vetter

doi:10.1117/12.2635752

4 October 2022 Ongoing advancement of free-moving radiation imaging and mapping

Brian J. Quiter, Mark S. Bandstra, Joshua W. Cates, Reynold J. Cooper, Joseph C. Curtis, Daniel Hellfeld, Tenzing H. Y. Joshi, Ryan T. Pavlovsky, Emil Rofors, Marco Salathe, Jayson R. Vavrek, Kai Vetter

Author Affiliations +

Proceedings Volume 12241, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIV; 122410H (2022) https://doi.org/10.1117/12.2635752
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

By combining radiation detection technologies with robotics sensing, the ability to continuously conduct gamma-ray imaging using freely-moving systems was demonstrated in 2015.¹ This new method, which was named free-moving 3D Scene Data Fusion (SDF), was then applied to mapping radioactive contamination and to contextualizing the extent of contamination and the efficacy of radiological clean-up efforts.^{2, 3} Since then, further studies into the types of radiation detection systems to which SDF could be applied resulted in the discovery and demonstration that neutron activity could be mapped using neutron-sensitive CLLBC scintillators, arrays of pixelated CZT detectors could be used to create multi-modal imagers, and more rudimentary detector systems such as arrays of four CsI modules could still achieve good-quality mapping by inferring source positioning through the encoded modulation of source-to-detector distance. This paper provides an overview of the SDF technology, highlights recent measurements leveraging SDF-equipped systems, discusses the continued development of quantitative algorithms^{4, 5} and their ramifications for developing autonomous SDF-capabilities, and summarizes future directions of research and application development for free moving radiation detection systems.

Conference Presentation

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Brian J. Quiter, Mark S. Bandstra, Joshua W. Cates, Reynold J. Cooper, Joseph C. Curtis, Daniel Hellfeld, Tenzing H. Y. Joshi, Ryan T. Pavlovsky, Emil Rofors, Marco Salathe, Jayson R. Vavrek, and Kai Vetter "Ongoing advancement of free-moving radiation imaging and mapping", Proc. SPIE 12241, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIV, 122410H (4 October 2022); https://doi.org/10.1117/12.2635752

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