Analysis of sextupole effects on 13 function beating in the SSRF storage ring
In a storage ring, asymmetry of the 13 function with momentum deviation is the main reason for asymmetry of the dynamic aperture. This paper applies simulation method based on AT code in Matlab to investigate sensitivity of the β function beating and the tune shift to quadrupole field error with the presence of bending field error in the Shanghai Synchrotron Radiation Facility (SSRF) storage ring. Sextupole effect on the variation trend is analyzed. Dynamics of the lattice for working points close to and away from the second order structural resonance stop-band are compared. These results show that the β function beating with momentum deviation doesn't lie in the influence of the second order structural resonance stop-bands completely, but it is relevant to lattice structure.
作 者： TIAN Shun-Qiang HOU Jie CHEN Guang-Ling LIU Gui-Min 作者单位： TIAN Shun-Qiang,HOU Jie,CHEN Guang-Ling(Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China)LIU Gui-Min(Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China)
刊 名： 中国物理C（英文版） ISTIC 英文刊名： CHINESE PHYSICS C 年，卷(期)： 2008 32(7) 分类号： O4 关键词： SSRF storage ring sextupole β function structural resonance stop-band