The measurement of electron beam transverse sizes by synchrotron radiation interferometry for HLS II

The measurement of electron beam transverse sizes by synchrotron radiation interferometry for HLS II 1 first-author 1 corresp Corresponding author. E-mail address: bgsun@ustc.edu.cn Corresponding author. E-mail address: bgsun@ustc.edu.cn bgsun@ustc.edu.cn 1 1 1 National Synchrotron Radiation Laboratory & School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China National Synchrotron Radiation Laboratory & School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China In order to improve accuracy of electron beam transverse sizes measurement, the vertical and horizontal synchrotron radiation light interferometers have been designed to measure beam transverse sizes for the upgrade project of Hefei Light Source (HLS II). In this paper, the light intensity distributions of the interferogram are descussed, and parameters of the interferometers are optimized. The interferograms are simulated under MATLAB. Taking integrations of two-dimensional interferogram intensity, normalized one-dimensional interference intensities distribution of the vertical and horizontal interferogram are obtained. The two curves are fitted to compare the beam transverse sizes with the designed sizes, and this verifies the feasibility of this method. Finally, several factors that affect the beam sizes measurement are discussed. Beam transverse sizes Synchrotron radiation interferometer Interferogram Simulation References Sun B G , Zheng P , Lu P , et al . Development of new beam profile and emittance measurement system for HLS . High Energy Phys Nucl Phys , 2006 , 8 , 30 : 792 - 796 . Development of new beam profile and emittance measurement system for HLS Mitsuhashi T . Spatial coherency of the synchrotron radiation at the visible light region and its application for the electron beam profile measurement . Proceedings of PAC 1997 , Vancouver, BC, Canada , 1997 , 5 : 766 - 768 . Spatial coherency of the synchrotron radiation at the visible light region and its application for the electron beam profile measurement Chen J , Ye K R , Leng Y B . Developmemnt of Shanghai synchrotron radiation racility synchrotron radiation interferometer . High Power Laser Particle Beams , 2011 , 23 : 179 - 184 . Developmemnt of Shanghai synchrotron radiation racility synchrotron radiation interferometer Mitsuhashi T . Beam profile and size measurement by SR interferometer . In beam measurement, proceedings of joint US-CERN-Japan-Russia School on particle accelerators , Montreux, Switzerland , 1998 , 5 : 399 - 427 . Beam profile and size measurement by SR interferometer Masaki M and Takano S . Beam size measurement of the Spring-8 storage ring by two-dimensional inter-ferometer . Proceedings of beam diagnostics and instrumentation for particle accelerator , Grenoble, France , 2001 , 5 : 142 - 144 . Beam size measurement of the Spring-8 storage ring by two-dimensional inter-ferometer Naito T and Mitsuhashi T . Improvement of the resolution of SR interferometer at KEK-ATF damping ring . Proceedings of the international particle conference , Kyoto, Japan , 2010 , 5 : 972 - 974 . Improvement of the resolution of SR interferometer at KEK-ATF damping ring Fisher A S , Holtzapple R L , Petree M , et al . Beam-size measurements on PEP-II using synchrotron-light interferometer . Proceedings of PAC2011 , Chicago , 2001 , 6 : 547 - 549 . Beam-size measurements on PEP-II using synchrotron-light interferometer Born M , Wolf E . Principles of optics . Cambridge University Press , Cambridge , 7 th edition, 1999 , chapter, 7-10 . Principles of optics Tang L L , Sun B G , Wang J G , et al . Application of the Gige vision digital camera for beam diagnostics in HLS . Proceedings of IPAC2010 , 2010 , 5 : 1041 - 1043 . Application of the Gige vision digital camera for beam diagnostics in HLS Dierks F . Sensitivity and image quality of digital cameras. Technical report , Basler AG , 2004 , 10 . Sensitivity and image quality of digital cameras. Technical report 10.13538/j.1001-8042/nst.23.193-198 Supported by the National Science Foundation of China (10675118, 11175173) . 2011-10-15 2012-08-20 2021-01-19 2012 Nuclear Science and Techniques 04 23