The variable-included angle plane-grating monochromator is a homemade key equipment of the scanning transmission X-ray microscopy (STXM) beamline at Shanghai Synchrotron Radiation Facility (SSRF).Monochromatic light o...The variable-included angle plane-grating monochromator is a homemade key equipment of the scanning transmission X-ray microscopy (STXM) beamline at Shanghai Synchrotron Radiation Facility (SSRF).Monochromatic light of various wavelengths is achieved by an effective control system that handles the rotation of the plane mirror and plane grating mounted in a high vacuum chamber.M511.DDB made by PI Corp.is used as motion stage which has a DC servo motor controlled by a C862 controller based on RS232 protocol.The software platform of STXM is EPICS,so the local control functions are implemented by LabVIEW program to satisfy physics control.For the remote control functions,the program is integrated into EPICS with ShareMemoryIOC.Experimental tests show that the repeat precision of motion control is less than 0.2μm,which meets the control demand.展开更多
A monochromator is important to a beamline for desired monochromatic light. There are three water-cooled double crystal monochromators(DCMs) commissioned in the phase-I beamlines of Shanghai Synchrotron Radiation Faci...A monochromator is important to a beamline for desired monochromatic light. There are three water-cooled double crystal monochromators(DCMs) commissioned in the phase-I beamlines of Shanghai Synchrotron Radiation Facility(SSRF). In this paper, the mechanical principle of the DCMs is introduced. A control system for the monochromator based on the standard architecture for SSRF beamlines is described. To achieve the control requirement precisely, the hardware includes VME(Versa Module Eurocard)-based controller for stepper motors, RS-232-based controllers for micropositioning and piezoelectric actuators. The software is developed with EPICS(Experimental Physics and Industrial Control System) package. Test results have revealed the stability and reliability of the system.展开更多
中国散裂中子源(CSNS)反角白光中子源束线主要由中子束窗、中子开关、中子准直器和真空管道等组成。为了保证CSNS反角白光中子源束线安全、稳定、可靠地运行,研制了基于EPICS(Experimental Physics and Industrial Control System)软件...中国散裂中子源(CSNS)反角白光中子源束线主要由中子束窗、中子开关、中子准直器和真空管道等组成。为了保证CSNS反角白光中子源束线安全、稳定、可靠地运行,研制了基于EPICS(Experimental Physics and Industrial Control System)软件架构的控制系统。该系统主要由中子束窗、中子开关及中子准直器的运动控制系统、真空控制系统和控制室三部分组成,实现了对反角白光中子源束线主要设备的远程监测和控制。测试结果表明,该系统具有稳定可靠性高、人机交互友好的特点,很好地满足了反角白光中子源束线运行的需要。展开更多
基金Supported by Shanghai Synchrotron Radiation Facility project
文摘The variable-included angle plane-grating monochromator is a homemade key equipment of the scanning transmission X-ray microscopy (STXM) beamline at Shanghai Synchrotron Radiation Facility (SSRF).Monochromatic light of various wavelengths is achieved by an effective control system that handles the rotation of the plane mirror and plane grating mounted in a high vacuum chamber.M511.DDB made by PI Corp.is used as motion stage which has a DC servo motor controlled by a C862 controller based on RS232 protocol.The software platform of STXM is EPICS,so the local control functions are implemented by LabVIEW program to satisfy physics control.For the remote control functions,the program is integrated into EPICS with ShareMemoryIOC.Experimental tests show that the repeat precision of motion control is less than 0.2μm,which meets the control demand.
基金Supported by the National Facility for Protein Science in Shanghaithe National Natural Science Foundation of China(No.U1232115)
文摘A monochromator is important to a beamline for desired monochromatic light. There are three water-cooled double crystal monochromators(DCMs) commissioned in the phase-I beamlines of Shanghai Synchrotron Radiation Facility(SSRF). In this paper, the mechanical principle of the DCMs is introduced. A control system for the monochromator based on the standard architecture for SSRF beamlines is described. To achieve the control requirement precisely, the hardware includes VME(Versa Module Eurocard)-based controller for stepper motors, RS-232-based controllers for micropositioning and piezoelectric actuators. The software is developed with EPICS(Experimental Physics and Industrial Control System) package. Test results have revealed the stability and reliability of the system.
文摘中国散裂中子源(CSNS)反角白光中子源束线主要由中子束窗、中子开关、中子准直器和真空管道等组成。为了保证CSNS反角白光中子源束线安全、稳定、可靠地运行,研制了基于EPICS(Experimental Physics and Industrial Control System)软件架构的控制系统。该系统主要由中子束窗、中子开关及中子准直器的运动控制系统、真空控制系统和控制室三部分组成,实现了对反角白光中子源束线主要设备的远程监测和控制。测试结果表明,该系统具有稳定可靠性高、人机交互友好的特点,很好地满足了反角白光中子源束线运行的需要。
文摘微小角中子散射(Very Small Angle Neutron Scattering,VSANS)谱仪是结构校准的有力工具。为了保证中国散裂中子源(China Spallation Neutron Source,CSNS)VSANS谱仪的运动部件满足重复定位精度优于±2μm的要求,设计了基于实验物理及工业控制系统(Experimental Physics and Industrial Control System,EPICS)软件架构的运动控制系统方案,并搭建了相应的运动控制系统样机。该样机使用步进电机、绝对式光栅和Beckhoff嵌入式控制器,实现了对平移台位置的全闭环控制。测试结果表明:该样机的重复定位精度优于±2μm,且具有稳定可靠性高的特点,很好地满足了CSNS VSANS谱仪的需要。
