典型文献
Low-radioactivity ultrasonic hydrophone used in positioning system for Jiangmen Underground Neutrino Observatory
文献摘要：
To satisfy the accurate positioning requirement of the calibration source in the Jiangmen Underground Neutrino Observatory,a Tonpilz-type hydrophone with low radioactivity and high electroacoustics is developed.The radioactivity of the proposed hydrophone is strictly controlled by selecting pure raw materials,especially active piezoelectric ceramics.The electroacoustic perfor-mance of the hydrophone is improved by making structural optimization.High sensitivity and aimed directivity are achieved using 33-mode piezoelectric ceramic rings arranged in series and improvement in the radiating head of the Tonpilz hydrophone,respectively.All electroacoustic performances are studied through finite element analyses.The simulations indicate that the electroacoustic perfor-mances of the hydrophones in linear alkylbenzene-based liquid scintillator can be approximately predicted accord-ing to the results in water because their differences caused by two types of acoustic media,water and liquid scintil-lator,are known.The tests show that the hydrophone prototype can achieve a maximum sensitivity of-209.3 dB and a beamwidth of 132.2° at a frequency of 143 kHz.In addition,eight hydrophones only contributed to a background radioactivity level of 26±4 mHz in the neutrino analysis.
文献关键词：
中图分类号：
作者姓名：
Duo Teng;Jiang-Lai Liu;Guo-Lei Zhu;Yue Meng;Yuan-yuan Zhang;Tao Zhang;Kai Luo;Rui Li;Jia-Qi Hui
作者机构：
School of Marine Science and Technology,Northwestern Polytechnical University,Xi'an 710072,China;National Key Laboratory for Underwater Information Processing and Control,Northwestern Polytechnical University,Xi'an 710072,China;School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China;Tsung-Dao Lee Institute,Shanghai Jiao Tong University,Shanghai 200240,China
文献出处：
引用格式：
[1]Duo Teng;Jiang-Lai Liu;Guo-Lei Zhu;Yue Meng;Yuan-yuan Zhang;Tao Zhang;Kai Luo;Rui Li;Jia-Qi Hui-.Low-radioactivity ultrasonic hydrophone used in positioning system for Jiangmen Underground Neutrino Observatory)[J].核技术（英文版）,2022(06):102-113
A类：
Jiangmen,Neutrino,Tonpilz,electroacoustics,electroacoustic,alkylbenzene,scintil
B类：
Low,radioactivity,ultrasonic,positioning,system,Underground,Observatory,satisfy,accurate,requirement,calibration,source,low,high,developed,proposed,strictly,controlled,by,selecting,pure,raw,materials,especially,active,piezoelectric,ceramics,improved,making,structural,optimization,High,sensitivity,aimed,directivity,are,achieved,using,mode,rings,arranged,series,improvement,radiating,head,respectively,All,performances,studied,through,finite,element,analyses,simulations,indicate,that,hydrophones,linear,liquid,scintillator,can,approximately,predicted,accord,results,water,because,their,differences,caused,two,types,media,known,tests,show,prototype,maximum,dB,beamwidth,frequency,kHz,In,addition,eight,only,contributed,background,level,mHz,neutrino,analysis
AB值：
0.499889
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