Design and first commissioning of a new mode with lower emittance in the SSRF storage ring

• Published in: Chinese physics C Vol. 33; no. 5; pp. 397 - 400
• Main Author: 张文志 田顺强 张满洲 后接 李浩虎 刘桂民 赵振堂
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.05.2009; Graduate University of Chinese Academy of Sciences, Beijing 100049, China; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China%Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
• Subjects: SSRF; 上海同步辐射装置; 储存环; 光学设计; 模式设计; 线性光学; 非线性优化; SSRF storage ring; optics; calibration; commissioning
• ISSN: 1674-1137; 0254-3052; 2058-6132
• DOI: 10.1088/1674-1137/33/5/016

A new mode is designed with an emittance of 2.47 nm-rad at 3.0 GeV beam energy, lower than the nominal mode of the Shanghai Synchrotron Radiation Facility （SSRF） storage ring. Details of the linear optics design and the nonlinear optimization are presented in this paper. During Phase I commissioning of the storage ring we tested the new optics mode and some expected results were obtained. After restoring the linear optics by means of the linear optics with closed orbit technique, the main parameters of the real machine agree well with the designed values and the injection efficiency and beam lifetime are acceptable.