Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2011, Vol. 22 ›› Issue (1): 9-12 doi: 10.13538/j.1001-8042/nst.22.9-12


Implementation of effective control system for variable-included angle plane-grating monochromator

LIU Ping1,* WANG Yong1 TAI Renzhong1 XUE Song1 LU Qipeng2 ZHENG Lifang1   

  1. 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China 2Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
LIU Ping, WANG Yong, TAI Renzhong, XUE Song, LU Qipeng, ZHENG Lifang. Implementation of effective control system for variable-included angle plane-grating monochromator.Nuclear Science and Techniques, 2011, 22(1): 9-12     doi: 10.13538/j.1001-8042/nst.22.9-12


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 0.2 μm, which meets the control demand.

Key words: Synchrotron radiation, Monochromator, LabVIEW, EPICS, Beamline control