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Radiation Imagers

EPSILON (Energetic Particle Sensors for the Identification and Localization of Originating Nuclei)  is our handheld or platform-mounted radiation imager.  EPSILON-D is our dual-particle imager capable of discerning both gamma-rays and neutrons in a live video display.  EPSILON-G is also available for higher resolution when only gamma-rays are of interest.

Using a mechanically-encoded aperture coupled to a pixelated detector array, our hand-held or mounted family of imagers, EPSILON, are able to localize sources of neutrons and gamma-rays independently.

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The imagers can be mounted on both fixed and mobile platform (drones, quadrapods, etc.) for applications such as  radiation contamination mapping and radiation source localization.

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When using in conjunction with LiDAR and optical imaging, real-to,e 3D mapping of the radiological environment can be achieved. 

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Relevant Publications:

  • Jeong, M., Hammig, M.D., Development of hand-held coded-aperture gamma ray imaging system based on GAGG(Ce) scintillator coupled with SiPM array. Nuc. Eng. Tech. (2020).

  • Jeong, M., Hammig, M.D., Comparison of gamma ray localization using system matrixes obtained by either MCNP simulations or ray-driven calculations for a coded-aperture imaging system, Nuc. Inst. Meth. A (2020).

  • Boo, J., Hammig, M.D., Jeong, M., Compact lightweight imager of both gamma rays and neutrons based on a pixelated stilbene scintillator coupled to a silicon photomultiplier array. Scientific Reports (2021).

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