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Chinese Physics C> 2016, Vol. 40> Issue(9) : 096202 DOI: 10.1088/1674-1137/40/9/096202

Laboratory measurement of radioactivity purification for 212Pb in liquid scintillator

  • Liquid scintillator (LS) has been widely used in past and running neutrino experiments, and is expected also to be used in future experiments. Requirements on LS radio-purity have become higher and higher. Water extraction is a powerful method to remove soluble radioactive nuclei, and a mini-extraction station has been constructed. To evaluate the extraction efficiency and optimize the operation parameters, a setup to load radioactivity to LS and a laboratory scale setup to measure radioactivity using the 212Bi-212Po-208Pb cascade decay have been developed. Experience from this laboratory study will be useful for the design of large scale water extraction plants and the optimization of working conditions in the future.
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    [4] Suxia Wei, Radiation Protection Bulletin, 4:12-14(1990)
    [5] Mike Leung, The Borexino Solar Neutrino Experiment:Scintillator Purification and Surface Contamination, Ph. D. Thesis (America:Princeton University, 2006)
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    [7] Z. Z. Xu, Introduction to Nuclear and Particle Physics (First edition, Hefei:USTC Press, 2009), p. 13(in Chinese)
    [8] R. Ford, M. Chen, O. Chkvorets et al, AIP Conf. Proc., 1338, 183(2011)
    [9] Sarah Elizabeth Quirk, Purification of Liquid Scintillator and Monte Carlo Simulations of Relevant Internal Backgrounds in SNO+, Master Thesis (Canada:Queen's University, 2008)
    [10] Y. S. Zhu, Statistical Analysis for High Energy Physics Experiments, (First edition, Beijing:Science Press, 2016), p. 198-199(in Chinese)

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Wei Hu, Jian Fang, Bo-Xiang Yu, Xuan Zhang, Li Zhou, Xiao Cai, Li-Jun Sun, Wan-Jin Liu, Lan Wang and Jun-Guang Lü. Laboratory measurement of radioactivity purification for 212Pb in liquid scintillator[J]. Chinese Physics C, 2016, 40(9): 096202. doi: 10.1088/1674-1137/40/9/096202
Wei Hu, Jian Fang, Bo-Xiang Yu, Xuan Zhang, Li Zhou, Xiao Cai, Li-Jun Sun, Wan-Jin Liu, Lan Wang and Jun-Guang Lü. Laboratory measurement of radioactivity purification for 212Pb in liquid scintillator[J]. Chinese Physics C, 2016, 40(9): 096202.  doi: 10.1088/1674-1137/40/9/096202 shu
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Received: 2016-05-06
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    Supported by The Strategic Priority Research Program of the Chinese Academy of Sciences (XDA10010500), Natural Science Foundation of China (11390384)

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Laboratory measurement of radioactivity purification for 212Pb in liquid scintillator

    Corresponding author: Wei Hu,
    Corresponding author: Jian Fang,
  • Received Date: 2016-05-06
  • Available Online: 2016-09-05
Fund Project:  Supported by The Strategic Priority Research Program of the Chinese Academy of Sciences (XDA10010500), Natural Science Foundation of China (11390384)

Abstract: Liquid scintillator (LS) has been widely used in past and running neutrino experiments, and is expected also to be used in future experiments. Requirements on LS radio-purity have become higher and higher. Water extraction is a powerful method to remove soluble radioactive nuclei, and a mini-extraction station has been constructed. To evaluate the extraction efficiency and optimize the operation parameters, a setup to load radioactivity to LS and a laboratory scale setup to measure radioactivity using the 212Bi-212Po-208Pb cascade decay have been developed. Experience from this laboratory study will be useful for the design of large scale water extraction plants and the optimization of working conditions in the future.

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