逐束团位置对束流横向反馈的影响分析
为了提升上海光源储存环横向反馈系统的性能，进一步优化抑制束团串内部横向耦合不稳定性，需要更深入了解现有束流反馈系统模式下的工作状态。用逐束团位置在线采集的方法，在束流诊断实验中获取横向反馈系统不同反馈作用力条件下的逐束团位置信息。通过离线频谱分析，得到束团串横向不稳定振荡振幅随反馈作用力及束团分布的变化规律，表明了横向反馈作用力对束流的整体作用具有正相关性，但对不同束团及束团串的作用效果具有较大差异。为更深入的研究束流不稳定性及柬流优化提供了数据支持。...
Saved in:
| Published in | 核技术 Vol. 40; no. 12; pp. 1 - 5 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国科学院上海应用物理研究所 嘉定园区 上海 201800%中国科学院上海应用物理研究所 嘉定园区 上海 201800
2017
中国科学院大学 北京 100049 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-3219 |
| DOI | 10.11889/j.0253-3219.2017.hjs.40.120101 |
Cover
| Summary: | 为了提升上海光源储存环横向反馈系统的性能，进一步优化抑制束团串内部横向耦合不稳定性，需要更深入了解现有束流反馈系统模式下的工作状态。用逐束团位置在线采集的方法，在束流诊断实验中获取横向反馈系统不同反馈作用力条件下的逐束团位置信息。通过离线频谱分析，得到束团串横向不稳定振荡振幅随反馈作用力及束团分布的变化规律，表明了横向反馈作用力对束流的整体作用具有正相关性，但对不同束团及束团串的作用效果具有较大差异。为更深入的研究束流不稳定性及柬流优化提供了数据支持。 |
|---|---|
| Bibliography: | ZHANG Ning1, LAI Longwei1, DUAN Liwu1,2, LENG Yongbina 1 （Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China; 2.University of Chinese Academy of Sciences, Beijing 100049, China） Background： As the transverse instability of beam has been suppressed effectively in storage ring, further optimization would mainly refer to the residual coupled instability for individual-bunch in transverse feedback （TFB） system upgrade plan in Shanghai Synchrotron Radiation Facility （SSRF）. TFB system could affect the transverse motion of bunched beam. Purpose： This study aims to analyze TFB effect on beam to make a definite target of TFB optimization in the future, and to understand the characteristics of coupled-bunch instability. Methods： A bunch-by-bunch position online data acquisition system was employed in the beam experiment, transverse position data with different TFB gain force was obtained for further analysis. By spectrum analysis of bunch-by-bunch position data in |
| ISSN: | 0253-3219 |
| DOI: | 10.11889/j.0253-3219.2017.hjs.40.120101 |