用单次光谱法评价SACLA BL1软x射线自由电子激光器的脉冲持续时间

2018 16th International Conference on Megagauss Magnetic Field Generation and Related Topics (MEGAGAUSS) Pub Date : 2018-09-01 DOI:10.1109/megagauss.2018.8722659

Y. Kubota, I. Inoue, K. Togawa, R. Kinjo, H. Iwayama, J. Harries, Y. Inubushi, S. Owada, K. Tono, Takashi Tanaka, T. Hara, M. Yabashi

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引用次数: 1

摘要

采用单次光谱法对SPring-8埃型自由电子激光器(SACLA) BL1处的软x射线自由电子激光器(FEL)脉冲持续时间进行了评价。用Kirkpatrick-Baez (KB)聚焦镜系统聚焦软x射线自由电子束流，用光栅和二维探测器测量单次发射光谱。随着加速器运行条件的改变，谱峰宽度的变化与脉冲持续时间成反比。通过比较脉冲宽度和模拟，脉冲持续时间被评估为小于100秒。

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Evaluation of Pulse Duration of the Soft X-ray Free Electron Laser at SACLA BL1 with Single-Shot Spectrometry

We performed single-shot spectrometry to evaluate the pulse duration of the soft X-ray free electron laser (FEL) at BL1 of SPring-8 Angstrom Compact free electron LAser (SACLA). The soft X-ray FEL beam was focused with a Kirkpatrick-Baez (KB) focusing mirror system and single-shot spectra were measured with a grating and a two dimensional detector. The spike widths of the spectra, which are inversely proportional to the pulse duration, varied when we changed the operation conditions of the accelerator. By comparing the spike widths with a simulation, the pulse duration was evaluated to be less than 100 fs.

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2018 16th International Conference on Megagauss Magnetic Field Generation and Related Topics (MEGAGAUSS)

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