Development of an autotuning magnet girder with high stability and accuracy

分类： 核科学技术 >> 核科学与技术 分类： 核科学技术 >> 粒子加速器 提交时间： 2023-06-20

Wang, Haijing Wang, Zihao Li, Chunhua Liu, Jia Zhu, Hongyan Qu, Huamin

摘要： With the development of high-performance photon sources which have extremely low emittance,autotuning magnet girders have drawn more and more attention, especially for diffraction-limited storagerings and free-electron lasers. The biggest challenge is to simultaneously obtain high stability and highflexibility. In this paper, an autotuning magnet-girder prototype has been designed and developed.Topological optimization, multipoint supports, and locking systems have been applied for magnet-girderdesign to improve the stability. The modal analysis accords with the vibration test well. The naturalfrequency of the magnet-girder assembly is deduced as high as 45.6 Hz, which demonstrates good stability.Ball-cam movers have been chosen as adjustment mechanisms, and a closed-loop control scheme has beenused to pursue high accuracy. The kinematic resolution is better than 1 m, and the accuracy is better than1 m within the adjusting range of #1;5 mm. Besides, it can eliminate most of the calibration, which cansave much manpower and time. The tests demonstrate that the magnet girder can be used for beam-basedgirder alignment with high stability and high accuracy.

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