skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Directional Software Algorithms and Sensor Evaluations.

Abstract

This report evaluates the relative performance of two directional gamma-ray spectrometers and processing algorithms that are used to construct images and spatially resolved spectra. Polaris, which was developed by H3D Inc., uses 18 pixelated CZT crystals to construct gamma-ray images in either Compton camerk(CC) or coded aperture (CA) mode. The other sensor that is referenced in this report incorporates a commercial high-purity germanium based imager, called GeGI, with a coded aperture mask and processing software developed by Oak Ridge National Laboratory (ORNL). H3D and the University of Michigan provided several algorithms that can be used to process data collected by Polaris in CC mode. This evaluation compares the performance of these algorithms with a Directional Unfolded Source Term (DUST) approach developed by Sandia National Laboratories (SNL). DUST differs from the other algorithms because its primary objective is synthesis of spatially-resolved gamma ray spectra as opposed to image reconstruction.

Authors:
; ; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1527301
Report Number(s):
SAND2018-3334
662888
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

O'Brien, Sean, Mitchell, Dean J., Horne, Steven M., and Thoreson, Gregory G. Directional Software Algorithms and Sensor Evaluations.. United States: N. p., 2018. Web. doi:10.2172/1527301.
O'Brien, Sean, Mitchell, Dean J., Horne, Steven M., & Thoreson, Gregory G. Directional Software Algorithms and Sensor Evaluations.. United States. doi:10.2172/1527301.
O'Brien, Sean, Mitchell, Dean J., Horne, Steven M., and Thoreson, Gregory G. Thu . "Directional Software Algorithms and Sensor Evaluations.". United States. doi:10.2172/1527301. https://www.osti.gov/servlets/purl/1527301.
@article{osti_1527301,
title = {Directional Software Algorithms and Sensor Evaluations.},
author = {O'Brien, Sean and Mitchell, Dean J. and Horne, Steven M. and Thoreson, Gregory G},
abstractNote = {This report evaluates the relative performance of two directional gamma-ray spectrometers and processing algorithms that are used to construct images and spatially resolved spectra. Polaris, which was developed by H3D Inc., uses 18 pixelated CZT crystals to construct gamma-ray images in either Compton camerk(CC) or coded aperture (CA) mode. The other sensor that is referenced in this report incorporates a commercial high-purity germanium based imager, called GeGI, with a coded aperture mask and processing software developed by Oak Ridge National Laboratory (ORNL). H3D and the University of Michigan provided several algorithms that can be used to process data collected by Polaris in CC mode. This evaluation compares the performance of these algorithms with a Directional Unfolded Source Term (DUST) approach developed by Sandia National Laboratories (SNL). DUST differs from the other algorithms because its primary objective is synthesis of spatially-resolved gamma ray spectra as opposed to image reconstruction.},
doi = {10.2172/1527301},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {3}
}