Hybrid Spectral and Image Deconvolution for High-Resolution CZT Imaging Spectrometers

Autor: Brian Kitchen, Christopher G. Wahl, Weiyi Wang, Willy Kaye, Steven Brown

Publikováno v: 2020 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC).

Large-volume 3D-position-sensitive CdZnTe is used in many applications for spectroscopy and Compton imaging. Being able to determine the incident gamma-ray flux, as a function of both the energy and direction, is, of course, a useful feature to provi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2f339f765b5c30460e01dff5129279a3
https://doi.org/10.1109/nss/mic42677.2020.9508056

Analysis of 83mKr prompt scintillation signals in the PIXeY detector

Autor: V. Velan, M. Horn, A.G. Singh, Blair Edwards, B. P. Tennyson, Ethan Bernard, N. Destefano, Christopher G. Wahl, Andreas Biekert, Moshe Gai, Q. Riffard, N. A. Larsen, Daniel McKinsey, E. M. Boulton, Sidney Cahn

Publikováno v: Journal of Instrumentation. 15:P01023-P01023

Prompt scintillation signals from $^{83m}$Kr calibration sources are a useful metric to calibrate the spatial variation of light collection efficiency and electric field magnitude of a two phase liquid-gas xenon time projection chamber. Because $^{83

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36bc4ceeab0a12a5be9b61002020e3cd
https://doi.org/10.1088/1748-0221/15/01/p01023

Extraction efficiency of drifting electrons in a two-phase xenon time projection chamber

Autor: B. N. Edwards, Christopher G. Wahl, L. Tvrznikova, N. Destefano, N.A. Larsen, Ethan Bernard, Daniel McKinsey, B. P. Tennyson, E. M. Boulton, M. Horn, Moshe Gai

Publikováno v: Journal of Instrumentation, vol 13, iss 01
Journal of Instrumentation, vol 13, iss 1
Edwards, BNV; Bernard, E; Boulton, EM; Destefano, N; Gai, M; Horn, M; et al.(2018). Extraction efficiency of drifting electrons in a two-phase xenon time projection chamber. Journal of Instrumentation, 13(1). doi: 10.1088/1748-0221/13/01/P01005. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/4x3795h7

© 2018 IOP Publishing Ltd and Sissa Medialab. We present a measurement of the extraction efficiency of quasi-free electrons from the liquid into the gas phase in a two-phase xenon time-projection chamber. The measurements span a range of electric fi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44174433c6750d6486fc3282b14880da
https://escholarship.org/uc/item/4x3795h7

Process Monitoring with High-Resolution CZT

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

Model-Based Reconstruction of Spectral and Spatial Source Distribution for Objects With Known Motion

Autor: Weiyi Wang, Christopher G. Wahl, Jeffrey A. Fessler, Jason M. Jaworski, Zhong He

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