SXFEL和DCLS束流截面测量系统软件设计
|
摘要
介绍了SXFEL和DCLS束流截面测量系统的软件设计方法。该系统基于以太网和EPICS分布式系统,并采用EPICS-Python方式进行设计,实现了CCD相机和步进电机的控制,完成了图像采集数据的拟合处理。经SXFEL和DCLS在线运行和测试,该系统主要性能为:成像系统的像素分辨率为13.9μm,重复定位精度为22μm,图像刷新率在内触发模式下可达到66 Hz,满足加速器运行需求。
Software design of beam profile monitoring system for Soft X-ray Free-Electron Laser(SXFEL) and Dalian Coherent Light Source(DCLS) is introduced. Based on the Ethernet,distributed EPICS architecture and the pattern of Python-EPICS,the control of both CCD camera and stepper motor and the fitting processing of image data are achieved. It is proved that the pixel resolution of imaging system is 13. 9 micron and the repetitive positioning precision is 22 micron during operation and online test in SXFEL and DCLS. The image refresh rate in the internal-trigger mode can reach to 66 Hz,which can totally meet the requirement of normal operation for accelerator.
Software design of beam profile monitoring system for Soft X-ray Free-Electron Laser(SXFEL) and Dalian Coherent Light Source(DCLS) is introduced. Based on the Ethernet,distributed EPICS architecture and the pattern of Python-EPICS,the control of both CCD camera and stepper motor and the fitting processing of image data are achieved. It is proved that the pixel resolution of imaging system is 13. 9 micron and the repetitive positioning precision is 22 micron during operation and online test in SXFEL and DCLS. The image refresh rate in the internal-trigger mode can reach to 66 Hz,which can totally meet the requirement of normal operation for accelerator.
引文
[1]赵振堂,王东.种子型高增益自由电子激光研究进展[J].激光与光电子学进展,2013,50(08):7-19.
[2]魏星,谷业凯,戴东旭.中国研制成功世界最亮极紫外光源——“大连光源”[J].中国科技术语,2017,19(03):60.
[3]王筠华,贡顶,孙葆根,等.合肥光源储存环束流截面测量系统改造和软件升级[J].强激光与粒子束,2003,15(10):1011-1014.
[4]李刚,赵籍九,陈伯飞,等.BEPCⅡ储存环真空控制系统[J].原子能科学技术,2010,44(04):504-507.
[5]EPICS Stream Device User’s Guide[EB/OL].http://epics.web.psi.ch/software/streamdevice/doc/.
[6]EPICS software for area detectors[EB/OL].http://cars.uchicago.edu/software/epics/area Detector.html.
[7]郭策,刘波,王东.SDUV-FEL光学系统控制改进[J].核技术,2013,36(05):22-26.
[2]魏星,谷业凯,戴东旭.中国研制成功世界最亮极紫外光源——“大连光源”[J].中国科技术语,2017,19(03):60.
[3]王筠华,贡顶,孙葆根,等.合肥光源储存环束流截面测量系统改造和软件升级[J].强激光与粒子束,2003,15(10):1011-1014.
[4]李刚,赵籍九,陈伯飞,等.BEPCⅡ储存环真空控制系统[J].原子能科学技术,2010,44(04):504-507.
[5]EPICS Stream Device User’s Guide[EB/OL].http://epics.web.psi.ch/software/streamdevice/doc/.
[6]EPICS software for area detectors[EB/OL].http://cars.uchicago.edu/software/epics/area Detector.html.
[7]郭策,刘波,王东.SDUV-FEL光学系统控制改进[J].核技术,2013,36(05):22-26.