TY - GEN
T1 - Gamma-ray Source Identification by a Vehicle-mounted 4π Compton Imager
AU - Tomita, Hideki
AU - Nurrachman, Agus
AU - Takahashi, Hiroyuki
AU - Ebi, Hidetake
AU - Ishida, Fumihiko
AU - Takada, Eiji
AU - Kawarabayashi, Jun
AU - Tsuchiya, Ken'Ichi
AU - Iguchi, Tetsuo
AU - Mukai, Atsushi
AU - Kanamori, Kotaro
AU - Shimazoe, Kenji
AU - Woo, Hanwool
AU - Tamura, Yusuke
AU - Hara, Shintaro
AU - Terabayashi, Ryohei
AU - Uenomachi, Mizuki
N1 - Funding Information:
* This work was supported in part by JSPS KAKENHI: Grant-in-Aid for Scientific Research (A), Grant Number 19H00881.
Publisher Copyright:
© 2020 IEEE.
PY - 2020/1
Y1 - 2020/1
N2 - Identification method for a hidden or shielded gamma-ray source using a vehicle-mounted 4pi gamma-ray imager was proposed. Since 4pi gamma-ray imaging provides direction of incident gamma-rays into the imager and its intensity, a position and an activity of a gamma-ray source can be estimated by several 4pi gamma images obtained by the imager moving around the source in combination with locations and orientation data of the imager. Using a 3D pixel array CdTe detector as a prototype of 4pi Compton gamma-ray imager, both the position and activity of a single 137 Cs point source was estimated quantitatively in 3D voxel space by 4pi Compton gamma-ray images measured at three positions. In addition, 4pi gamma images were obtained by off-line processing of data acquired during the movement of the vehicle-mounted imager with processing time less than measurement time.
AB - Identification method for a hidden or shielded gamma-ray source using a vehicle-mounted 4pi gamma-ray imager was proposed. Since 4pi gamma-ray imaging provides direction of incident gamma-rays into the imager and its intensity, a position and an activity of a gamma-ray source can be estimated by several 4pi gamma images obtained by the imager moving around the source in combination with locations and orientation data of the imager. Using a 3D pixel array CdTe detector as a prototype of 4pi Compton gamma-ray imager, both the position and activity of a single 137 Cs point source was estimated quantitatively in 3D voxel space by 4pi Compton gamma-ray images measured at three positions. In addition, 4pi gamma images were obtained by off-line processing of data acquired during the movement of the vehicle-mounted imager with processing time less than measurement time.
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U2 - 10.1109/SII46433.2020.9025865
DO - 10.1109/SII46433.2020.9025865
M3 - Conference contribution
AN - SCOPUS:85082617402
T3 - Proceedings of the 2020 IEEE/SICE International Symposium on System Integration, SII 2020
SP - 18
EP - 21
BT - Proceedings of the 2020 IEEE/SICE International Symposium on System Integration, SII 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE/SICE International Symposium on System Integration, SII 2020
Y2 - 12 January 2020 through 15 January 2020
ER -