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arXiv 1604.04710physics.acc-ph
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用精密调谐测量研究储存环中的磁滞效应

Study of Magnetic Hysteresis Effects in a Storage Ring Using Precision Tune Measurement

Wei Li, H. Hao, Stepan F. Mikhailov, Wei Xu, Jing-Yi Li, Wei-Min Li, Ying. K. Wu

摘要:

随着近几十年来加速器科学和技术的进步,加速器社区已经专注于下一代光源的开发,例如衍射限制存储环(DLSR),其需要精确控制电子束能量和电子感应加速器调谐。这项工作的目的是了解磁滞效应的电子束能量和晶格聚焦的圆形加速器,并开发新的方法来获得更好的控制这些影响。在本文中,我们将报告我们最近的实验研究的磁滞效应及其对杜克储存环晶格的影响,使用横向反馈为基础的精密调谐测量系统。与磁铁归一化和晶格斜坡的主要磁滞效应进行了仔细研究,以确定一个有效的程序晶格制备,同时保持高度的可重复性的晶格聚焦。通过测量调整四极设置所引起的电子感应加速器调谐偏移,研究了局部磁滞效应。一种新的技术已经被开发出来,以精确地恢复四极的聚焦强度,通过返回到一个适当的设置,以克服局部滞后效应。

英文摘要:

With advances in accelerator science and technology in the recent decades, the accelerator community has focused on the development of next-generation light sources, for example the diffraction-limited storage rings (DLSRs), which requires precision control of the electron beam energy and betatron tunes. This work is aimed at understanding magnet hysteresis effects on the electron beam energy and lattice focusing in the circular accelerators, and developing new methods to gain better control of these effects. In this paper, we will report our recent experimental study of the magnetic hysteresis effects and their impacts on the Duke storage ring lattice using the transverse feedback based precision tune measurement system. The major magnet hysteresis effects associated with magnet normalization and lattice ramping are carefully studied to determine an effective procedure for lattice preparation while maintaining a high degree of reproducibility of lattice focusing. The local hysteresis effects are also studied by measuring the betatron tune shifts resulted from adjusting the setting of a quadrupole. A new technique has been developed to precisely recover the focusing strength of the quadrupole by returning it to a proper setting to overcome the local hysteresis effect.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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