Aging of LAB-based liquid scintillator in stainless steel containers

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CHEN Hai-Tao, YU Bo-Xiang, SHAN Qing, DING Ya-Yun, DU Bing, LIU Shu-Tong, ZHANG Xuan, ZHOU Li, JIA Wen-Bao, FANG Jian, YE Xing-Chen, HU Wei, NIU Shun-Li, YAN Jia-Qing, ZHAO Hang and HONG Dao-Jin. Aging of LAB-based liquid scintillator in stainless steel containers[J]. Chinese Physics C, 2015, 39(6): 066002. doi: 10.1088/1674-1137/39/6/066002
CHEN Hai-Tao, YU Bo-Xiang, SHAN Qing, DING Ya-Yun, DU Bing, LIU Shu-Tong, ZHANG Xuan, ZHOU Li, JIA Wen-Bao, FANG Jian, YE Xing-Chen, HU Wei, NIU Shun-Li, YAN Jia-Qing, ZHAO Hang and HONG Dao-Jin. Aging of LAB-based liquid scintillator in stainless steel containers[J]. Chinese Physics C, 2015, 39(6): 066002.  doi: 10.1088/1674-1137/39/6/066002 shu
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Received: 2014-09-04
Revised: 2014-11-11
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Aging of LAB-based liquid scintillator in stainless steel containers

    Corresponding author: CHEN Hai-Tao,
    Corresponding author: YU Bo-Xiang,

Abstract: Types 316 and 304 stainless steel are two candidates for the storage vessels and piping systems of LAB-based liquid scintillator (LS) in the JUNO experiment. LS aging experiments are carried out at temperatures of 40℃ and 25℃. After 192 days aging at 40℃, the attenuation length of LS was reduced by 6% in a glass container, 12% in a type 304 stainless steel tank, and 10% in a type 316 stainless steel tank. At 25℃ in 304 and 316 stainless steel tanks, the attenuation length was reduced by 6% after 307 days. The light yield and the absorption spectrum were practically the same as that of the unaged sample. The concentration of element Fe in the LAB-based LS did not show a clear change. Type 316 and 304 stainless steel can be used as vessels and transportation pipeline material for LAB-based LS.

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