A new method for position-sensitive measurement of beta surface contamination

In this paper, we propose a new method forposition-sensitive measurement of beta surface contamination.With a position-sensitive detector of enlarged sensitivedetection area, accurate information of thecontamination distribution can be obtained. The positionsensitivedetection is based on a large-are...

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Bibliographic Details
Published inNuclear science and techniques Vol. 28; no. 2; pp. 49 - 56
Main Authors Qu, Yan-Tao, Wang, Hui, Liu, Yang, Chen, Ling, Hou, Jie, Liu, Zhe, Ma, Ji-Zeng
Format Journal Article
LanguageEnglish
Published Singapore Springer Singapore 01.02.2017
Subjects
Beta
contamination;Position-sensitive
Energy
fibers;Plastic
Hadrons
Heavy Ions
measurement;Wavelength
Nuclear Energy
Nuclear Physics
scintillator
shifting
surface
Beta surface contamination
Position-sensitive measurement
Plastic scintillator
Wavelength shifting fibers
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Summary:In this paper, we propose a new method forposition-sensitive measurement of beta surface contamination.With a position-sensitive detector of enlarged sensitivedetection area, accurate information of thecontamination distribution can be obtained. The positionsensitivedetection is based on a large-area plastic scintillatorand the wavelength shifting (WLS) fibers and adoptsthe ''light center of gravity'' method. Optical transmissionof the detector is simulated with a preliminary detectormodel, and feasibility of the detector design and measurementmethod is evaluated using an experiment system.The simulation and experiment results at different beta-rayincident points on the scintillator surface show that there isa polynomial relationship between the average amplituderatio of the output pulses from the two parallel WLS fibersin the same fiber layer and the relative distance from theincident point to the WLS fiber.
Bibliography:31-1559/TL
ISSN:1001-8042
2210-3147
DOI:10.1007/s41365-016-0176-5