用于高重复率X射线自由电子激光实验的旋转盘固体样品输送系统的研制。

Development of spinning-disk solid sample delivery system for high-repetition rate x-ray free electron laser experiments.

作者信息

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

机构信息

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

Department of Physics, University of California Los Angeles, Los Angeles, California 90095, USA.

出版信息

Rev Sci Instrum. 2023 Oct 1;94(10). doi: 10.1063/5.0168125.

DOI:10.1063/5.0168125

PMID:37801013

Abstract

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.

摘要

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。