Large-Area Compton Camera for High-Speed and 3-D Imaging
- Authors
- Kim, Young-su; Kim, Jae Hyeon; Lee, Junyoung; Kim, Chan Hyeong
- Issue Date
- Nov-2018
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- 3-D imaging; Compton camera; imaging sensitivity; large size; monolithic scintillator
- Citation
- IEEE TRANSACTIONS ON NUCLEAR SCIENCE, v.65, no.11, pp.2817 - 2822
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON NUCLEAR SCIENCE
- Volume
- 65
- Number
- 11
- Start Page
- 2817
- End Page
- 2822
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2293
- DOI
- 10.1109/TNS.2018.2874890
- ISSN
- 0018-9499
- Abstract
- Compton imaging is a promising imaging modality for radioactive contamination in nuclear facilities. However, most of the Compton cameras in nuclear applications have been constructed with small detector sensors, up to a few centimeters, resulting in low imaging sensitivities. To overcome the limitation and improve imaging sensitivity, in this paper, a Compton camera, named a large-area Compton camera (LACC), was developed using two large-size (27 cm x 27 cm) monolithic Nal(TI) scintillators and 72 square-type photomultiplier tubes. The imaging performance of the LACC was evaluated for surface and internal contamination cases. Our results show that the absolute imaging sensitivity of the LACC was 3.4 x 10(-5) for a Cs-137 point source at about 1-m distance in front of the LACC, which is a few 10x higher than those of the existing Compton cameras. The obtained imaging resolution was 14.1 degrees full-width at half-maximum (FWHM) when we use the backprojection algorithm and 5.6 degrees FWHM when we use the maximum-likelihood expectation-maximization algorithm. The LACC also showed the 3-D imaging capability, not only for the surface contamination cases hut also for the internal contamination cases within a depth of a few tens of centimeters.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 원자력공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2293)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.