Attenuation length measurements of a liquid scintillator with LabVIEW and reliability evaluation of the device  

作　　者：高龙 俞伯祥 丁雅韵 周莉 温良剑 谢宇广 王志刚 蔡啸 孙希磊 方建 薛镇 章爱武 吕绮雯 孙丽君 葛永帅 刘颖彪 牛顺利 胡涛 曹俊 吕军光 

机构地区：[1]State Key Laboratory of Particle Detection and Electronics, (Institute of High Energy Physics, Chinese Academy of Sciences) [2]Graduate University of Chinese Academy of Sciences [3]Shanxi University

出　　处：《Chinese Physics C》2013年第7期47-51,共5页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (11105160, 11005117)

摘　　要：An attenuation length measurement device was constructed using an oscilloscope and LabVIEW for signal acquisition and processing. The performance of the device has been tested in a variety of ways. The test results show that the set-up has a good stability and high precision （sigma/mean reached 0.4 percent）. Besides, the accuracy of the measurement system will decrease by about 17 percent if a filter is used. The attenuation length of a gadolinium-loaded liquid scintillator （Gd-LS） was measured as 15.1±0.35 m where Gd-LS was heavily used in the Daya Bay Neutrino Experiment. In addition, one method based on the Beer-Lambert law was proposed to investigate the reliability of the measurement device, the R-square reached 0.9995. Moreover, three purification methods for Linear Alkyl Benzene （LAB） production were compared in the experiment.An attenuation length measurement device was constructed using an oscilloscope and LabVIEW for signal acquisition and processing. The performance of the device has been tested in a variety of ways. The test results show that the set-up has a good stability and high precision （sigma/mean reached 0.4 percent）. Besides, the accuracy of the measurement system will decrease by about 17 percent if a filter is used. The attenuation length of a gadolinium-loaded liquid scintillator （Gd-LS） was measured as 15.1±0.35 m where Gd-LS was heavily used in the Daya Bay Neutrino Experiment. In addition, one method based on the Beer-Lambert law was proposed to investigate the reliability of the measurement device, the R-square reached 0.9995. Moreover, three purification methods for Linear Alkyl Benzene （LAB） production were compared in the experiment.

关 键 词：attenuation length liquid scintillator （LS） Beer-Lambert law LABVIEW 

分 类 号：TL812.2[核科学技术—核技术及应用]