Aging of LAB-based liquid scintillator in stainless steel containers

被引：5
|
作者：
Chen Hai-Tao [1 ,2 ]
Yu Bo-Xiang [2 ,3 ]
Shan Qing [1 ]
Ding Ya-Yun [2 ,3 ]
Du Bing [2 ,3 ]
Liu Shu-Tong [2 ]
Zhang Xuan [2 ,3 ]
Zhou Li [2 ,3 ]
Jia Wen-Bao [1 ]
Fang Jian [2 ,3 ]
Ye Xing-Chen [2 ]
Hu Wei [2 ,3 ]
Niu Shun-Li [2 ,3 ]
Yan Jia-Qing [2 ]
Zhao Hang [2 ,3 ]
Hong Dao-Jin [2 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Nanjing 210016, Jiangsu, Peoples R China
[2] State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China
[3] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
来源：
CHINESE PHYSICS C | 2015年 / 39卷 / 06期
基金：
中国国家自然科学基金;
关键词：
JUNO; liquid scintillator; aging; light yield; absorption spectrum; attenuation length; CORROSION;
D O I：
10.1088/1674-1137/39/6/066002
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
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 degrees C and 25 degrees C. After 192 days aging at 40 degrees C, 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 degrees C 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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页数：5
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