Optimisation and performance test of fibre-based large-area surface contamination monitor
A portable large-area radiological contamination surface monitor of advanced design is now under research and development. This monitor, whose detection area is 1200 cm2, is mainly applied for hot-spot searching for nuclear emergency response or facility decommissioning. It consists of a thin plasti...
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doaj-0a96a8c237a944a88c9fc8ab58cc54312020-11-25T02:53:17ZengElsevierResults in Physics2211-37972019-12-0115Optimisation and performance test of fibre-based large-area surface contamination monitorJie Hou0Yafei Qi1Haiyan Luan2Lihua Ren3Yantao Qu4Wei Wang5Ying Wang6Xia Li7Zhiping Luo8Jizeng Ma9Nuclear and Radiation Safety Center, Ministry of Environmental Protection of P.R. China, No. 54 Hongliannancun, Haidian District, 100082 Beijing, PR China; China Institute of Atomic Energy, Xinzhen, Fangshan District, 102413 Beijing, PR China; Corresponding author at: Nuclear and Radiation Safety Center, Ministry of Environmental Protection of P.R. China, No. 54 Hongliannancun, Haidian District, 100082 Beijing, PR China.Peking Union Medical College Hospital, Shuaifuyuan#1, Dongcheng District, 100005 Beijing, PR ChinaNuclear and Radiation Safety Center, Ministry of Environmental Protection of P.R. China, No. 54 Hongliannancun, Haidian District, 100082 Beijing, PR ChinaNuclear and Radiation Safety Center, Ministry of Environmental Protection of P.R. China, No. 54 Hongliannancun, Haidian District, 100082 Beijing, PR ChinaChina Institute of Atomic Energy, Xinzhen, Fangshan District, 102413 Beijing, PR ChinaChina Institute of Atomic Energy, Xinzhen, Fangshan District, 102413 Beijing, PR ChinaChina Institute of Atomic Energy, Xinzhen, Fangshan District, 102413 Beijing, PR ChinaChina Institute of Atomic Energy, Xinzhen, Fangshan District, 102413 Beijing, PR ChinaChina Institute of Atomic Energy, Xinzhen, Fangshan District, 102413 Beijing, PR ChinaInternational Atomic Energy Agency, Street, PO Box 100, Vienna, AustriaA portable large-area radiological contamination surface monitor of advanced design is now under research and development. This monitor, whose detection area is 1200 cm2, is mainly applied for hot-spot searching for nuclear emergency response or facility decommissioning. It consists of a thin plastic scintillation tile and wavelength-shifting fibres coupled to a photomultiplier tube. To improve the detector performance, it is necessary to calculate the collection efficiency of optical photons from the scintillator. The optical photon transportation processes in the plastic scintillator and wavelength-shifting fibres are simulated using the Monte Carlo code Geant4. For further optimisation, experiments with different fibre arrangements are conducted to verify uniformity. In conclusion, an arrangement of ten neighbouring wavelength-shifting fibres, with alternating fibres connected on opposite sides of a organic support for the plastic scintillator presents a better performance for detection. Keywords: GEANT4, Monte Carlo, Surface contamination monitor, Wavelength shifting fibre, Plastic scintillationhttp://www.sciencedirect.com/science/article/pii/S2211379718318758 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jie Hou Yafei Qi Haiyan Luan Lihua Ren Yantao Qu Wei Wang Ying Wang Xia Li Zhiping Luo Jizeng Ma |
spellingShingle |
Jie Hou Yafei Qi Haiyan Luan Lihua Ren Yantao Qu Wei Wang Ying Wang Xia Li Zhiping Luo Jizeng Ma Optimisation and performance test of fibre-based large-area surface contamination monitor Results in Physics |
author_facet |
Jie Hou Yafei Qi Haiyan Luan Lihua Ren Yantao Qu Wei Wang Ying Wang Xia Li Zhiping Luo Jizeng Ma |
author_sort |
Jie Hou |
title |
Optimisation and performance test of fibre-based large-area surface contamination monitor |
title_short |
Optimisation and performance test of fibre-based large-area surface contamination monitor |
title_full |
Optimisation and performance test of fibre-based large-area surface contamination monitor |
title_fullStr |
Optimisation and performance test of fibre-based large-area surface contamination monitor |
title_full_unstemmed |
Optimisation and performance test of fibre-based large-area surface contamination monitor |
title_sort |
optimisation and performance test of fibre-based large-area surface contamination monitor |
publisher |
Elsevier |
series |
Results in Physics |
issn |
2211-3797 |
publishDate |
2019-12-01 |
description |
A portable large-area radiological contamination surface monitor of advanced design is now under research and development. This monitor, whose detection area is 1200 cm2, is mainly applied for hot-spot searching for nuclear emergency response or facility decommissioning. It consists of a thin plastic scintillation tile and wavelength-shifting fibres coupled to a photomultiplier tube. To improve the detector performance, it is necessary to calculate the collection efficiency of optical photons from the scintillator. The optical photon transportation processes in the plastic scintillator and wavelength-shifting fibres are simulated using the Monte Carlo code Geant4. For further optimisation, experiments with different fibre arrangements are conducted to verify uniformity. In conclusion, an arrangement of ten neighbouring wavelength-shifting fibres, with alternating fibres connected on opposite sides of a organic support for the plastic scintillator presents a better performance for detection. Keywords: GEANT4, Monte Carlo, Surface contamination monitor, Wavelength shifting fibre, Plastic scintillation |
url |
http://www.sciencedirect.com/science/article/pii/S2211379718318758 |
work_keys_str_mv |
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