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Abstract
In the magnetic field measurement of accelerator magnets, efficient and accurate positioning of the magnetic field measurement system and the magnet is a critical process. By analyzing the mechanical structure and working principle of harmonic coil magnetic field measurement system, an automatic positioning technology is proposed in this research for the high-precision and fast positioning of multipole magnet and harmonic coil magnetic field measurement system. Through the special design and comprehensive application of multi-camera photogrammetry system, control system and six-degree-of-freedom (6DoF) attitude automatic adjustment system, fast non-contact measurement and automatic attitude adjustment of harmonic coil magnetic field measurement system and multipole magnet can be realized. The proposed automatic positioning system and operation scheme can not only save labor costs, but also improve the reliability of harmonic coils and the positioning efficiency of magnetic field measurement system. The proposed research can also monitor the position changes of the harmonic coil and the multipole magnet in the magnetic field measurement process in real time through the multi-camera photogrammetry system, and further control the accuracy of the magnetic field measurement of the harmonic coil.
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No potential conflict of interest was reported by the author(s).
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Notes on contributors
W. J. Chen
W. J. Chen, Ph.D., senior engineer at the Institute of Modern Physics, Chinese Academy of Sciences, engaged in heavy ion accelerator survey and alignment research, recent representative articles published include a new alignment method for HIMM magnetic field measurement system and alignment of heavy ion therapy center vertical terminal, etc.
Y. Q. Yang
Y. Q. Yang is a researcher at the Institute of Modern Physics, Chinese Academy of Sciences. She is engaged in the mechanical design and research of heavy ion accelerators. Recent representative works include the development of the Lanzhou heavy ion accelerator cooling storage ring kicking magnet power supply and other articles.
X. D. Zhang
X. D. Zhang, engineer at the Institute of Modern Physics, Chinese Academy of Sciences, engaged in the research of survey and alignment of heavy ion accelerators.
Y. J. Zheng
Y. J. Zheng is an engineer from the Institute of Modern Physics, Chinese Academy of Sciences. He is engaged in the mechanical design and research of heavy ion accelerators. His recent representative works include articles on the vibration of the magnets scanned by the ground simulation device of the space environment.
B. Zhang
B. Zhang is a professor-level engineer at the Institute of Modern Physics, Chinese Academy of Sciences. He is engaged in the mechanical design and research of heavy ion accelerators. His recent representative works include articles on the calibration and survey and alignment of cryogenic superconducting components.
J. Yang
J. Yang, engineer at the Institute of Modern Physics, Chinese Academy of Sciences, engaged in the research of measurement of magnetic field of heavy ion accelerators.
S. M. Wang
S. M. Wang, a senior engineer at the Institute of Modern Physics, Chinese Academy of Sciences, is engaged in the research of heavy ion accelerator survey and alignment. His recent representative works include the installation and alignment of the deflection magnet of the HIRFL micro-beam irradiation device, and the survey and alignment of the main ring magnet of the cooling storage ring.
G. Z. Sun
G. Z. Sun is an engineer at the Institute of Modern Physics, Chinese Academy of Sciences. He is engaged in the research on the survey and alignment of heavy ion accelerators. His recently published representative works include the research on rationalization of the target position of the alignment element.
J. D. Yuan
J. D. Yuan is a senior engineer at the Institute of Modern Physics, Chinese Academy of Sciences. He is engaged in the research of heavy ion accelerator survey and alignment. The representative work recently published is an overview of the application of tension wire technology in accelerator survey and alignment, and the low temperature survey and alignment technology of ADS injector II Cry Module, etc.
D. L. Yang
D. L. Yang, engineer at the Institute of Modern Physics, Chinese Academy of Sciences, engaged in the research of survey and alignment of heavy ion accelerators.