Welke N, Majernik N, Ash R, Moro A, Agustsson R, Manwani P, Li K, Sakdinawat A, Aquila A, Benediktovitch A, Halavanau A, Rosenzweig J, Bergmann U, Pellegrini C
Department of Physics, University of Wisconsin Madison, Madison, Wisconsin 53706, USA.
Department of Physics, University of California Los Angeles, Los Angeles, California 90095, USA.
Rev Sci Instrum. 2023 Oct 1;94(10). doi: 10.1063/5.0168125.
X-ray free-electron lasers (XFELs) deliver intense x-ray pulses that destroy the sample in a single shot by a Coulomb explosion. Experiments using XFEL pulse trains or the new generation of high-repetition rate XFELs require rapid sample replacement beyond those provided by the systems now used at low repletion-rate XFELs. We describe the development and characterization of a system based on a spinning disk to continuously deliver a solid sample into an XFEL interaction point at very high speeds. We tested our system at the Linac Coherent Light Source and European XFEL hard x-ray nano-focus instruments, employing it to deliver a 25 μm copper foil sample, which can be used as a gain medium for stimulated x-ray emission for the proposed x-ray laser oscillator.
X射线自由电子激光器（XFEL）能产生强烈的X射线脉冲，通过库仑爆炸在单次照射中破坏样品。使用XFEL脉冲序列或新一代高重复率XFEL的实验，需要比目前低重复率XFEL系统所能提供的更快的样品更换速度。我们描述了一种基于旋转盘的系统的开发与特性，该系统能够以非常高的速度将固体样品连续输送到XFEL相互作用点。我们在直线加速器相干光源和欧洲XFEL硬X射线纳米聚焦仪器上测试了我们的系统，使用它输送了一个25μm的铜箔样品，该样品可用作所提议的X射线激光振荡器受激X射线发射的增益介质。
