通过调整光栅单色仪的定焦常数来补偿自由电子激光光束线的源漂移。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-03-01 Epub Date: 2025-02-03 DOI:10.1107/S1600577524012116

Chaofan Xue, Lian Xue, Yong Wang, Renzhong Tai

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引用次数: 0

摘要

在基于线加速器的大型自由电子激光设备中，激光饱和点往往不固定在波动器中，这将导致光束线的纵向源点漂移。纵向源点漂移会造成光束线性能的不稳定，尤其会影响变线距光栅单色仪对软x射线光束线的能量分辨能力。本文介绍了一种调整定焦常数来补偿这种纵向源点漂移的方法。仿真结果表明，该方法可以有效地恢复光栅单色仪的能量分辨能力。

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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Compensation for the source drift of a free-electron laser beamline by adjusting the fixed-focus constant of the grating monochromator.

For large-scale free-electron laser facilities based on linear accelerators, the laser saturation point is not frequently fixed in the undulator, which will cause a longitudinal source point drift of the beamline. The longitudinal source point drift will cause an instability in the performance of the beamline, especially affecting the energy-resolving power of variable-line-spacing grating monochromators for soft X-ray beamlines. A method of adjusting the fixed-focus constant to compensate for this longitudinal source point drift is introduced in this work. Simulation results indicate that this method can effectively recover the energy-resolving power of the grating monochromator.

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来源期刊

Journal of Synchrotron Radiation INSTRUMENTS & INSTRUMENTATIONOPTICS&-OPTICS

CiteScore

5.60

自引率

12.00%

发文量

289

审稿时长

1 months

期刊介绍： Synchrotron radiation research is rapidly expanding with many new sources of radiation being created globally. Synchrotron radiation plays a leading role in pure science and in emerging technologies. The Journal of Synchrotron Radiation provides comprehensive coverage of the entire field of synchrotron radiation and free-electron laser research including instrumentation, theory, computing and scientific applications in areas such as biology, nanoscience and materials science. Rapid publication ensures an up-to-date information resource for scientists and engineers in the field.