Abstract
Introduction
The structure of the Jiangmen Underground Neutrino Observatory (JUNO) Central Detector (CD) was designed using finite element methods (FEM). The structure of the small JUNO CD prototype was 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 the CD were verified during the load test, which met the requirements of design and experiment.
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References
Li. Yufeng, C. Jun, W. Yifang et al., Unambiguous determination of the neutrino mass hierarchy using reactor neutrinos[J]. Phys. Rev. D 88(1), 013008 (2013)
A. Abusleme et al. (JUNO Collaboration), JUNO Physics and Detector, arXiv:2104.02565
A. Abusleme et al., Calibration strategy of the JUNO experiment. J. High. Energy. Phys. 3, 1–33 (2021)
Z. Wang (2015) JUNO Central Detector and its prototyping[C]. XIV International Conference on Topics in Astroparticle and Underground Physics (TAUP 2015) IOP Publishing
Y. Xiaoyu, H. Yuekun, Ma. Xiaoyan et al., Thermal reliability analysis of the central detector of JUNO[J]. Radiat. Detect. Technol. Methods 3, 64 (2019)
W. Yuanqing, Z. Liang, H. Yuekun et al., Application of an acrylic vessel supported by a stainless-steel trussfor the JUNO central detector[J]. Sci. China. Technol. Sci. 57(12), 2523–2529 (2014)
M. Li, Z. Guo et al., Separation of scintillation and Cherenkov lights in linear alkyl benzene[J]. Nucl. Inst. Methods. Phys. Res. 830, 303–8 (2016)
C. Jiahua, W. Zhe et al., Determination of the total absorption peak in an electromagnetic calorimeter[J]. Nucl. Instrum. Methods Phys. Res., Sect. A 827, 165–170 (2016)
W. Hanyu, W. Zhe, C. Shaomin, Discovery potential for supernova relic neutrinos with slow liquid scintillator detectors[J]. Phys. Lett. B 769, 255–261 (2017)
Li. Huafeng et al., Research on design of the main stainless steel structure of JUNO Central Detector[J]. Building Structure 10, 92–97 (2018)
Y. Xiaoyu, H. Yuekun et al., The design of the small prototype for the central detector of JUNO[J]. Rad. Detect. Technol. Methods 2(2), 1–7 (2018)
K. Yuan, C. Xinji, ANSYS Introduction[M] (China Electric Power Press, Beijing, 2007)
Pu. Guangyi, ANSYS Workbench basic course and example explanation[M] (China WaterPower Press, Beijing, 2010)
L. Hongwen, L. Jianxing, C. Manling, Concise mechanics of materials[M] (Higher Education Press, Beijing, 2016)
S. Kato, Buckling strength calculation of single-layer latticed shell based on the combined effect of constant load and earthquake[J]. Space Structure 4, 79–86 (2015)
JB 4732–1995. Steel pressure vessels - Design by Analysis
Acknowledgements
This work is supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA100102).
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Yang, X., Heng, Y., He, W. et al. Structure design and load test of the small prototype for the JUNO Central Detector. Radiat Detect Technol Methods 6, 439–450 (2022). https://doi.org/10.1007/s41605-022-00354-0
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DOI: https://doi.org/10.1007/s41605-022-00354-0