Structure design and load test of the small prototype for the JUNO Central Detector  

作　　者：Xiaoyu Yang Yuekun Heng Wei He Xiaoyan Ma Lei Yang Jiajie Ling Zhi Wu Kaixi Huang Caishen Wang Ruiting Lei Yatian Pei Xiaohui Qian 

机构地区：[1]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [2]State Key Laboratory of Particle Detection and Electronics,Beijing 100049,China [3]University of Chinese Academy of Science,Beijing 100049,China [4]Dongguan University of Technology,Dongguan 523808,China [5]Sun Yat-Sen University,Guangzhou 510275,China

出　　处：《Radiation Detection Technology and Methods》2022年第4期439-450,共12页辐射探测技术与方法（英文）

基　　金：supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA100102).

摘　　要：Introduction The structure of the Jiangmen Underground Neutrino Observatory(JUNO)CentralDetector(CD)was designed using finite element methods(FEM).The structure of the small JUNOCDprototypewas also designed using the same structural scheme and method as those of the CD,and the load test was carried out after the accomplishment of structure design and manufacturing.Methods The load test can help verify the performance and reliability of the mechanical monitoring system and liquid filling system of the CD,verify the consistency of FEM calculations and axial force measurement results of the sensors,and accumulate experience for the installation of the connecting bars.Conclusion The measurement scheme was considered and determined,and the connecting bars’axial forces under different liquid filling conditions were measured and compared with the FEM results,the consistencies of which were good.The mechanical monitoring system and liquid filling system of theCDwere verified during the load test,which met the requirements of design and experiment.

关 键 词：Structure design Load test Numerical analysis Small prototype Central Detector JUNO 

分 类 号：O57[理学—粒子物理与原子核物理]