Scan system for arbitrary-shaped samples at the synchrotron radiation facility  

作　　者：Xu-Ying Lan Dong-Xu Liang Cheng-Wen Mao 

机构地区：[1]Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Zhangjiang Campus, Shanghai 201204, China

出　　处：《Nuclear Science and Techniques》2017年第5期18-27,共10页核技术（英文）

摘　　要：X-ray fluorescence(XRF) scan methodology is important for elemental mapping of samples at a synchrotron radiation facility. To save the experiment time and improve the experiment efficiency, one should develop an efficient XRF scan method. In this paper, a new scan mode is presented. It can map arbitrary-shaped areas withou stopping the motors. The control and data acquisition system integrates motor controlling, detector triggering, and data acquisition and storage. The system realizes the arbitrary-shaped 2D-mapping and fluorescence data acquisition synchronously. SR-XRF mapping has been performed with a standard gold mask to verify the validity of this method a beamline BL15U1 of the Shanghai Synchrotron Radiation Facility. The results show that this method reduces the tota scan time and improves the experiment efficiency.X-ray fluorescence (XRF) scan methodology is important for elemental mapping of samples at a synchrotron radiation facility. To save the experiment time and improve the experiment efficiency, one should develop an efficient XRF scan method. In this paper, a new scan mode is presented. It can map arbitrary-shaped areas without stopping the motors. The control and data acquisition system integrates motor controlling, detector triggering, and data acquisition and storage. The system realizes the arbitrary-shaped 2D-mapping and fluorescence data acquisition synchronously. SR-XRF mapping has been performed with a standard gold mask to verify the validity of this method at beamline BL15U1 of the Shanghai Synchrotron Radiation Facility. The results show that this method reduces the total scan time and improves the experiment efficiency.

关 键 词：SYNCHROTRON radiation X-ray fluorescence mapping EPICS XPS controller 

分 类 号：TL544[核科学技术—核技术及应用]