| 对数比电路原理与低频工作点反馈系统 |
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| 引用本文： | 刘建宏,王筠华,郑凯,贡顶,杨永良,孙葆根.对数比电路原理与低频工作点反馈系统[J].强激光与粒子束,2004,16(2):227-230. |
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| 作者姓名： | 刘建宏 王筠华 郑凯 贡顶 杨永良 孙葆根 |
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| 作者单位： | 中国科学技术大学 国家同步辐射实验室，安徽 合肥 230029 |
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| 摘 要： | 在合肥光源注入系统升级改造后，尝试了几种方法来改进机器注入束流稳定性。研制了用于抑制注入过程残余β振荡的水平和垂直方向的工作点振荡抑制模块，尝试了包括逐圈测量和锁相环原理来激励和稳定束流等方法来跟踪工作点变化。详细分析了基于对数比原理的逐圈测量系统，包括单束团和多束团模式，证明在多束团模式下逐圈测量的可行性和意义，更新了数据采集和可远程控制的软件集成环境。
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| 关 键 词： | 对数比电路 逐圈测量系统 电路仿真 共振抑制法 |
| 收稿时间： | 2003/5/7 |
Log-ratio circuit and low frequency feedback system |
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| Abstract.Log-ratio circuit and low frequency feedback system[J].High Power Laser and Particle Beams,2004,16(2):227-230. |
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| Authors: | Abstract |
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| Institution: | National Synchrotron Radiation Laboratory, University of Science and Technology of China, P.O.Box 6022, Hefei 230029, China |
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| Abstract: | During the past year, several measures have been tried to improve the stability of injected beam at HLS (Hefei Light Source), which has newly upgraded its injection system. To overcome the evident residual betatron oscillation, one specific betatron-oscillation suppressor circuitry is accomplished to take it under control. Means to excite and damp beam motions has been suggested, as well as a PLL circuit in plan to track the variation of tune under various machine states. In addition, works as improving the performance of early version of turn-by-turn system and rebuilding the software kit to make it a reliable instrumentation for beam nonlinear dynamics study and machine state monitoring. |
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| Keywords: | Log-ratio circuit Turn-by-turn system Circuitry simulation Resonant depressor |
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