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Title: Characterization of a large-area iQID imager for safeguards applications

Abstract

Environmental sampling and sample analyses by the International Atomic Energy Agency is a key method for verifying declarations in international safeguards agreements. Quantitative Digital Autoradiography for Environmental Samples is a system developed by Pacific Northwest National Laboratory to examine environmental swipe samples (ESS) prior to subsequent, destructive analysis. This approach is passive and noninvasive for imaging beta and gamma emissions, which transmit through the plastic bags containing the ESS. Alpha particle imaging is also possible with different ESS containers. This technology is based on a portable, real-time, event-counting, high spatial resolution system called iQID (ionizing-radiation Quantum Imaging Detector), which is made from commercial, off-the-shelf components. This includes a scintillator in direct contact with a micro-channel plate image intensifier and a lens for imaging the intensified scintillation events onto a CCD/CMOS camera. The QDARES large-area iQID includes a fiber-optic taper coupled to the image intensifier which increases the imaging area to a ~100 cm square with a 105 mm x 105 mm taper. In this study, we describe new characterization results, including spatial resolution, energy response, minimum detectable activity for several isotopes, detector uniformity, and count-rate capability.

Authors:
 [1];  [1];  [1];  [1];  [2]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Univ. of Arizona, Tucson, AZ (United States); Univ. of Colorado, Boulder, CO (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1477776
Report Number(s):
PNNL-SA-136771
Journal ID: ISSN 0168-9002; PII: S0168900218310428
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; iQID; Digital autoradiography; Ionizing radiation; Characterization; Safeguards

Citation Formats

Clarke, Ardelia M., McDonald, Ben S., Zalavadia, Mital A., Kasparek, Dustin M., and Miller, Brian W. Characterization of a large-area iQID imager for safeguards applications. United States: N. p., 2018. Web. doi:10.1016/j.nima.2018.08.084.
Clarke, Ardelia M., McDonald, Ben S., Zalavadia, Mital A., Kasparek, Dustin M., & Miller, Brian W. Characterization of a large-area iQID imager for safeguards applications. United States. doi:10.1016/j.nima.2018.08.084.
Clarke, Ardelia M., McDonald, Ben S., Zalavadia, Mital A., Kasparek, Dustin M., and Miller, Brian W. Mon . "Characterization of a large-area iQID imager for safeguards applications". United States. doi:10.1016/j.nima.2018.08.084. https://www.osti.gov/servlets/purl/1477776.
@article{osti_1477776,
title = {Characterization of a large-area iQID imager for safeguards applications},
author = {Clarke, Ardelia M. and McDonald, Ben S. and Zalavadia, Mital A. and Kasparek, Dustin M. and Miller, Brian W.},
abstractNote = {Environmental sampling and sample analyses by the International Atomic Energy Agency is a key method for verifying declarations in international safeguards agreements. Quantitative Digital Autoradiography for Environmental Samples is a system developed by Pacific Northwest National Laboratory to examine environmental swipe samples (ESS) prior to subsequent, destructive analysis. This approach is passive and noninvasive for imaging beta and gamma emissions, which transmit through the plastic bags containing the ESS. Alpha particle imaging is also possible with different ESS containers. This technology is based on a portable, real-time, event-counting, high spatial resolution system called iQID (ionizing-radiation Quantum Imaging Detector), which is made from commercial, off-the-shelf components. This includes a scintillator in direct contact with a micro-channel plate image intensifier and a lens for imaging the intensified scintillation events onto a CCD/CMOS camera. The QDARES large-area iQID includes a fiber-optic taper coupled to the image intensifier which increases the imaging area to a ~100 cm square with a 105 mm x 105 mm taper. In this study, we describe new characterization results, including spatial resolution, energy response, minimum detectable activity for several isotopes, detector uniformity, and count-rate capability.},
doi = {10.1016/j.nima.2018.08.084},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {9}
}

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