Transverse beam size measurement system using visible synchrotron   radiation at HLS II
  An interferometer system and an imaging system using visible synchrotron radiation (SR) have been installed in HLS II storage ring. Simulations of these two systems are given using Synchrotron Radiation Workshop(SRW) code. With these two systems, the beam energy spread and the beam emittance can be measured. A detailed description of these two systems and the measurement method is given in this paper. The measurement results of beam size, emittance and energy spread are given at the end. 
Kai Tang, Bao-Gen Sun, Yong-Liang Yang, Ping Lu, Lei-Lei Tang,   Fang-Fang Wu, Chao-Cai Cheng, Jia-Jun Zheng, Hao Li
physics.acc-ph