Girder deformation related phase errors on the undulators for the European X-Ray Free Electron Laser

Physical Review Special Topics-accelerators and Beams Pub Date : 2015-06-22 DOI:10.1103/PHYSREVSTAB.18.060704

Yuhui Li, B. Ketenoglu, J. Pflueger

引用次数: 7

Abstract

In long gap tunable undulators, strong magnetic forces always lead to some amount of gap-dependent girder deformation and resulting gap-dependent phase errors. For the undulators for the European XFEL, this problem has been investigated thoroughly and quantitatively. Using the different gap dependencies of suitable shims and pole height tuning, a method is presented which can be applied to reduce the overall gap dependence of the phase error if needed. It is exemplified by tuning one of the undulator segments for the European X-Ray Free Electron Laser back to specs.

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欧洲x射线自由电子激光器波动器上与梁变形相关的相位误差

在长间隙可调波动器中，强磁力总是导致一定程度的与间隙相关的梁变形，从而导致与间隙相关的相位误差。对于欧洲XFEL的波动器，已经对这一问题进行了深入和定量的研究。利用合适垫片的不同间隙依赖关系和极点高度调整，提出了一种可以在需要时减小相位误差总体间隙依赖关系的方法。通过将欧洲x射线自由电子激光器的一个波动器段调整到规格来说明这一点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Review Special Topics-accelerators and Beams 物理-物理：核物理

自引率

0.00%

发文量

审稿时长

3-8 weeks

期刊介绍： Physical Review Special Topics - Accelerators and Beams (PRST-AB), is a peer reviewed, purely electronic journal, distributed without charge to readers and funded by contributions from national laboratories. It covers the full range of accelerator science and technology: subsystem and component technologies, beam dynamics; accelerator applications; and design, operation, and improvement of accelerators used in science and industry. This includes accelerators for high-energy and nuclear physics, synchrotron radiation production, spallation neutron sources, medical therapy, and intense beam applications.