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

• Tác giả: Renzhong Tai, Yong Wang, Chaofan Xue, Lian Xue
• Ngôn ngữ: eng
• Ký hiệu phân loại: 028.8 Use of books and other information media as sources of recreation and self-development
• Thông tin xuất bản: United States : Journal of synchrotron radiation , 2025
• Bộ sưu tập: NCBI
• ID: 690552
• Chủ đề: 1. Compensation; 2. For; 3. The

Tóm tắt

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.