QXAFS system of the BL14W1 XAFS beamline at the Shanghai Synchrotron Radiation Facility.
QXAFS system of the BL14W1 XAFS beamline at the Shanghai Synchrotron Radiation Facility.
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DOI：
10.1107/s0909049512038873
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发表时间：
2012-11
影响因子：
2.5
通讯作者：
Heng Liu;Y. Zhou;Zheng Jiang;Songqi Gu;Xiangjun Wei;Yuying（黄宇营） Huang;Y. Zou;Hongjie（徐洪杰） Xu
中科院分区：
文献类型：
--
作者：
Heng Liu;Y. Zhou;Zheng Jiang;Songqi Gu;Xiangjun Wei;Yuying（黄宇营） Huang;Y. Zou;Hongjie（徐洪杰） Xu
在上海同步辐射装置BL14W1 XAFS光束线上，基于EPICS和LabVIEW系统实现了快速扫描XAFS（QXAFS）方法。这是通过前所未有地使用LabVIEW的数据记录和监控模块与同步辐射设施中的EPICS进行通信来实现的。在2 s内获得了能量范围为1.2 keV的Cu K边QXAFS精细谱，且束流位置稳定，数据质量与阶跃模式XAFS谱相当。为了获得QXAFS实验的最佳参数，对模数转换器和双晶单色器装置进行了优化。这些光谱的信噪比已被计算，以估计这些参数的重要性。
The quick-scanning XAFS (QXAFS) method is achieved at the BL14W1 XAFS beamline at the Shanghai Synchrotron Radiation Facility based on the EPICS and LabVIEW systems. This is realised by the unprecedented use of LabVIEW's data logging and supervisory control module for communication with EPICS in synchrotron radiation facilities. A fine QXAFS spectrum with an energy range of 1.2 keV at the Cu K-edge has been collected in 2 s with stable beam position and the data quality is comparable with that of the step-mode XAFS spectrum. Analog-to-digital converter and double-crystal monochromator set-ups have been optimized in order to acquire optimal parameters for the QXAFS experiments. Signal-to-noise ratios of these spectra have been calculated in order to estimate the importance of these parameters.