Laboratory measurement of radioactivity purification for ^(212)Pb in liquid scintillator  

作　　者：胡维 方建 俞伯祥 张烜 周莉 蔡啸 孙丽君 刘万金 王岚 吕军光 

机构地区：[1]State Key Laboratory of Particle Detection and Electronics (Institute of High Energy Physics, CAS) [2]Institute of High Energy Physics, University of Chinese Academy of Sciences

出　　处：《Chinese Physics C》2016年第9期120-124,共5页中国物理C（英文版）

基　　金：Supported by The Strategic Priority Research Program of the Chinese Academy of Sciences(XDA10010500);Natural Science Foundation of China(11390384)

摘　　要：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.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.

关 键 词：liquid scintillator radioactive load radioactive measurement cascade decay water extraction 

分 类 号：O572.21[理学—粒子物理与原子核物理]