Zhicheng Yang, Ximing Zhang, Heping Geng, Jiahua Chen, Chao Feng, Bo Liu, Bin Li
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引用次数: 0
摘要
上海软X射线自由电子激光装置的SUD光束线设计并调试了一台宽带在线X射线光谱仪，可为用户实验提供SASE和种子FEL脉冲，光子能量范围为50-620 eV。通过在 92 eV 和 249 eV 在线测量校准，光谱仪的分辨力分别为 ∼20000 和 ∼15000，绝对光子能量由电子飞行时间光谱仪表征。光谱仪提供的高能量分辨率可以分辨出 FEL 光谱中的细微结构，从而确定其脉冲长度。
Development and commissioning of a broadband online X-ray spectrometer for the SXFEL Facility.
A broadband online X-ray spectrometer has been designed and commissioned at the SUD beamline of the Shanghai Soft X-ray Free-Electron Laser Facility, which can deliver both SASE and seeded FEL pulses to user experiments, spanning the photon energy range of 50-620 eV. The resolving powers of the spectrometer calibrated via online measurement at 92 eV and 249 eV are ∼20000 and ∼15000, respectively, and the absolute photon energy is characterized by an electron time-of-flight spectrometer. The high energy resolution provided by the spectrometer can differentiate the fine structure in the FEL spectrum, to determine its pulse length.
期刊介绍：
Synchrotron radiation research is rapidly expanding with many new sources of radiation being created globally. Synchrotron radiation plays a leading role in pure science and in emerging technologies. The Journal of Synchrotron Radiation provides comprehensive coverage of the entire field of synchrotron radiation and free-electron laser research including instrumentation, theory, computing and scientific applications in areas such as biology, nanoscience and materials science. Rapid publication ensures an up-to-date information resource for scientists and engineers in the field.
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