A momentum resolved resonant inelastic X-ray scattering (qRIXS) experimental station with continuously rotatable spectrometers and parallel detection is designed to operate at different beamlines at synchrotron and free electron laser (FEL) facilities. This endstation, currently located at the Advanced Light Source (ALS), has five emission ports on the experimental chamber for mounting the high-throughput modular soft X-ray spectrometers (MXS) [24]. Coupled to the rotation from the supporting hexapod, the scattered X-rays from 27.5° (forward scattering) to 152.5° (backward scattering) relative to the incident photon beam can be recorded, enabling the momentum-resolved RIXS spectroscopy. The components of this endstation are described in details, and the preliminary RIXS measurements on highly oriented pyrolytic graphite (HOPG) reveal the low energy vibronic excitations from the strong electron-phonon coupling at C K edge around σ* band. The grating upgrade option to enhance the performance at low photon energies is presented and the potential of this spectroscopy is discussed in summary.

具有连续可旋转光谱仪和平行检测的动量解析共振非弹性 X 射线散射 (qRIXS) 实验站设计用于在同步加速器和自由电子激光 (FEL) 设施的不同光束线下运行。该终端站目前位于高级光源 (ALS)，在实验室上有五个发射端口，用于安装高通量模块化软 X 射线光谱仪 (MXS) [24]。结合支撑六足动物的旋转，可以记录相对于入射光子束从 27.5°（前向散射）到 152.5°（后向散射）的散射 X 射线，从而实现动量分辨 RIXS 光谱。详细描述了该终端的组件，σ * 带。提出了增强低光子能量性能的光栅升级选项，并总结讨论了这种光谱学的潜力。