Development of a hemispherical rotational modulation collimator system for imaging spatial distribution of radiation sources
SCIE
SCOPUS
- Title
- Development of a hemispherical rotational modulation collimator system for imaging spatial distribution of radiation sources
- Authors
- Na, M.; Lee, S.; Kim, H. S.; Rho, J.; Kim, G.; Ok, J. G.
- Date Issued
- 2017-12
- Publisher
- IOP PUBLISHING LTD
- Abstract
- Detecting and mapping the spatial distribution of radioactive materials is of great importance for environmental and security issues. We design and present a novel hemispherical rotational modulation collimator (H-RMC) system which can visualize the location of the radiation source by collecting signals from incident rays that go through collimator masks. The H-RMC system comprises a servo motor-controlled rotating module and a hollow heavy-metallic hemisphere with slits/slats equally spaced with the same angle subtended from the main axis. In addition, we also designed an auxiliary instrument to test the imaging performance of the H-RMC system, comprising a high-precision x-and y-axis staging station on which one can mount radiation sources of various shapes. We fabricated the H-RMC system which can be operated in a fully-automated fashion through the computer-based controller, and verify the accuracy and reproducibility of the system by measuring the rotational and linear positions with respect to the programmed values. Our H-RMC system may provide a pivotal tool for spatial radiation imaging with high reliability and accuracy.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/50552
- DOI
- 10.1088/1748-0221/12/12/C12050
- ISSN
- 1748-0221
- Article Type
- Article
- Citation
- JOURNAL OF INSTRUMENTATION, vol. 12, page. C12050, 2017-12
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.