Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Jason M. Jaworski"'
Autor:
Timothy Slatina, Zhong He, Y. Andy Boucher, Jon Sowers, Steven Brown, Christopher G. Wahl, Jason M. Jaworski, Kevin Moran, Willy Kaye, Feng Zhang, Hao Yang
Publikováno v:
2018 IEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC).
Large-volume 3D-position-sensitive CZT offers several advantages for coded-aperture imaging, including high photoelectric fraction, sufficient depth to capture even high-energy gamma rays, and good energy resolution. Sub-pixel resolution can be used
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37ef9db8fad2d630bc093b47f23852a3
https://doi.org/10.1109/nssmic.2018.8824490
https://doi.org/10.1109/nssmic.2018.8824490
Autor:
Christopher G. Wahl, Zhong He, Y. Andy Boucher, Jason M. Jaworski, Willy Kaye, Feng Zhang, Weiyi Wang, Alexis King
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 784:377-381
Recently, H3D has designed and introduced a gamma-ray imaging spectrometer system named Polaris-H. Polaris-H was designed to perform gamma spectroscopy and imaging throughout nuclear power plants. It integrates a 3D-position-sensitive pixelated CZT d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb2ab60d97ed7a66eabfeb4e952b1a97
https://doi.org/10.1016/j.nima.2014.12.110
https://doi.org/10.1016/j.nima.2014.12.110
Autor:
Steven Brown, Feng Zhang, Weiyi Wang, David Price Tefft, Thurston Matthews, Hao Yang, Kevin Moran, Christopher G. Wahl, Molly Ulrich, Jason M. Jaworski, Brian Kitchen, Timothy Slatina, Y. Andy Boucher, Willy Kaye, Zhong He
Publikováno v:
2017 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC).
During nuclear power plant operation and maintenance, knowing the quantity and presence of radioisotopes in sub-system piping is critical for providing a comprehensive understanding of plant operation and for reducing worker dose. Two new instruments
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6719809a186fde514de601255c94149e
https://doi.org/10.1109/nssmic.2017.8532778
https://doi.org/10.1109/nssmic.2017.8532778
Model-Based Reconstruction of Spectral and Spatial Source Distribution for Objects With Known Motion
Publikováno v:
IEEE Transactions on Nuclear Science. 60:3981-3989
Radiation imaging has many applications ranging from health care to homeland security and defense, and source motion is present in many of these applications. When the motion profile of the source is known or otherwise estimated, one can use motion-c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::221feb3d2083323cee8adb5439b15e9d
https://doi.org/10.1109/tns.2013.2278283
https://doi.org/10.1109/tns.2013.2278283
Publikováno v:
IEEE Transactions on Nuclear Science. 59:3332-3338
Testing of 20 × 20 × 15 mm3 3D position sensitive, CdZnTe detectors grown by Redlen Technologies Inc. has shown that 98 out of the 145 detectors analyzed achieved sub-1% FWHM at 662 keV for single-pixel events. Improvements in the detector performa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47201da27bf666915492df34185b4693
https://doi.org/10.1109/tns.2012.2218829
https://doi.org/10.1109/tns.2012.2218829
Publikováno v:
IEEE Transactions on Nuclear Science. 59:1672-1680
In order to support analysis of data from 3D-position-sensitive gamma-ray detectors, a software package, UMImaging, has been designed and implemented. UMImaging is designed to apply to a wide range of hardware configurations and analysis needs. Its f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9456c8b866ece51c2a621f710960468
https://doi.org/10.1109/tns.2012.2196803
https://doi.org/10.1109/tns.2012.2196803
Publikováno v:
IEEE Transactions on Nuclear Science. 59:469-478
In previous works, maximum-likelihood expectation-maximization deconvolution for two-interaction events within a single CdZnTe detector with dimensions of was implemented. This deconvolution method is capable of estimating the source image for each e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::650885934bbe91d2cb4f9112ab143e9f
https://doi.org/10.1109/tns.2012.2183384
https://doi.org/10.1109/tns.2012.2183384
Autor:
Christopher G. Wahl, Zhong He, Y. Andy Boucher, Feng Zhang, Alexis King, Weiyi Wang, Jason M. Jaworski, Willy Kaye
Publikováno v:
2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC).
Polaris-H, a compact Compton camera designed by H3D, Inc. has been characterized and tested in field measurements at nuclear power plants. Polaris-H integrates a 3D-position-sensitive pixelated CZT detector (20 mm × 20 mm × 15 mm), associated reado
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45452818e50b0df5fb1cd4297492f2a8
https://doi.org/10.1109/nssmic.2014.7431109
https://doi.org/10.1109/nssmic.2014.7431109
Autor:
Zhong He, Jason M. Jaworski
Publikováno v:
2011 IEEE Nuclear Science Symposium Conference Record.
The ability to do real-time 4π Compton imaging is potentially useful when searching for radioactive sources with appropriate gamma-ray energy emissions. Stationary 4π Compton imagers have the ability to reconstruct the correct direction to gamma-ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20d00415da447466d43467f76a64beab
https://doi.org/10.1109/nssmic.2011.6154305
https://doi.org/10.1109/nssmic.2011.6154305
Publikováno v:
2011 IEEE Nuclear Science Symposium Conference Record.
The 18 - detector array system consists of eighteen 20mm × 20mm × 15mm CdZnTe detectors. In addition to spectroscopic capabilities, it has the ability to image gamma-ray sources with energies above 200keV in 4-pi space via Compton imaging. To exten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8b560ab48ab3869c486794e643aac99
https://doi.org/10.1109/nssmic.2011.6154760
https://doi.org/10.1109/nssmic.2011.6154760