通过相干散射和散斑分析对X射线自由电子激光进行焦点特性表征。
Focus characterization at an X-ray free-electron laser by coherent scattering and speckle analysis.
作者信息
Sikorski Marcin, Song Sanghoon, Schropp Andreas, Seiboth Frank, Feng Yiping, Alonso-Mori Roberto, Chollet Matthieu, Lemke Henrik T, Sokaras Dimosthenis, Weng Tsu-Chien, Zhang Wenkai, Robert Aymeric, Zhu Diling
机构信息
Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
Institute of Structural Physics, Technische Universität Dresden, D-01062 Dresden, Germany.
出版信息
J Synchrotron Radiat. 2015 May;22(3):599-605. doi: 10.1107/S1600577515004361. Epub 2015 Apr 14.
X-ray focus optimization and characterization based on coherent scattering and quantitative speckle size measurements was demonstrated at the Linac Coherent Light Source. Its performance as a single-pulse free-electron laser beam diagnostic was tested for two typical focusing configurations. The results derived from the speckle size/shape analysis show the effectiveness of this technique in finding the focus' location, size and shape. In addition, its single-pulse compatibility enables users to capture pulse-to-pulse fluctuations in focus properties compared with other techniques that require scanning and averaging.
基于相干散射和定量散斑尺寸测量的X射线聚焦优化与表征在直线加速器相干光源上得到了验证。针对两种典型的聚焦配置，测试了其作为单脉冲自由电子激光束诊断工具的性能。从散斑尺寸/形状分析得出的结果表明了该技术在确定焦点位置、尺寸和形状方面的有效性。此外，其单脉冲兼容性使用户能够捕捉焦点特性的逐脉冲波动，这与其他需要扫描和平均的技术相比具有优势。
Zotero 插件