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研发旋盘固体样本输送系统,用于高重复率的X射线自由电子激光实验

N Welke¹, N Majernik², R Ash¹

¹Department of Physics, University of Wisconsin Madison, Madison, Wisconsin 53706, USA.

The Review of scientific instruments

|October 6, 2023

概括

一种新的旋盘系统能够为X射线自由电子激光 (XFEL) 实验提供连续的,高速的样本,克服了当前先进研究技术的局限性.

科学领域:

物理物理学物理
材料科学材料科学材料科学
仪器化仪器化仪器化

背景情况:

X射线自由电子激光器 (XFEL) 产生强烈的脉冲,通过库伦爆炸摧毁样品.
高重复率的XFEL实验需要超出目前低重复率能力的快速样品替换系统.

研究的目的:

为 XFEL 交互点开发和描述一种用于连续,高速的固体样本输送到 XFEL 交互点的新型系统.
为了实现需要快速样本周转的先进XFEL实验,例如使用脉冲列车或高重复率源.

主要方法:

设计并实施了一种用于样品输送的旋盘系统.
描述了该系统在Linac连贯光源 (LCLS) 和欧洲XFEL的性能.
使用25微米铜作为样本,适合刺激的X射线发射.

主要成果:

成功演示了以非常高的速度连续输送样品.
在领先的硬X射线纳米聚焦仪器上验证了系统的功能.
铜样本适合作为拟议的X射线激光振荡器的增益介质.

结论:

旋盘系统有效地解决了在高重复率的XFEL实验中快速取样更换的需求.
这项技术有助于未来的研究,包括开发X射线激光振荡器.

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