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Experimental station Bernina at SwissFEL: condensed matter physics on femtosecond time scales investigated by X-ray diffraction and spectroscopic methods

机译:SwissFEL的贝尔尼纳实验站:通过X射线衍射和光谱法研究的飞秒时间尺度上的凝聚态物理学

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摘要

The Bernina instrument at the SwissFEL Aramis hard X-ray free-electron laser is designed for studying ultrafast phenomena in condensed matter and material science. Ultrashort pulses from an optical laser system covering a large wavelength range can be used to generate specific non-equilibrium states, whose subsequent temporal evolution can be probed by selective X-ray scattering techniques in the range 2–12 keV. For that purpose, the X-ray beamline is equipped with optical elements which tailor the X-ray beam size and energy, as well as with pulse-to-pulse diagnostics that monitor the X-ray pulse intensity, position, as well as its spectral and temporal properties. The experiments can be performed using multiple interchangeable endstations differing in specialization, diffractometer and X-ray analyser configuration and load capacity for specialized sample environment. After testing the instrument in a series of pilot experiments in 2018, regular user operation begins in 2019.
机译:SwissFEL Aramis硬X射线自由电子激光器中的Bernina仪器旨在研究凝聚态和材料科学中的超快现象。来自光学激光系统的超短脉冲覆盖大的波长范围,可以用来产生特定的非平衡态,可以通过选择性X射线散射技术在2–12 keV范围内探测其随后的时间演化。为此,X射线束线配备了可调整X射线束大小和能量的光学元件,并配有脉冲对脉冲诊断程序,可监控X射线脉冲强度,位置及其变化。光谱和时间特性。可以使用多个可互换的终端站进行实验,这些终端站的专业化,衍射仪和X射线分析仪的配置以及针对特定样品环境的负载能力各不相同。在2018年进行了一系列试点实验对仪器进行测试后,常规用户操作将于2019年开始。

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