Measurement and correction of coupling in BEPC II

被引：1
|
作者：
Zhang Yuan [1 ]
Yu Cheng-Hui [1 ]
Ji Da-Heng [1 ]
Xu Gang [1 ]
Wei Yuan-Yuan [1 ]
Qin Qing [1 ]
机构：
[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
来源：
CHINESE PHYSICS C | 2011年 / 35卷 / 12期
基金：
中国国家自然科学基金;
关键词：
BEPC II; coupling; luminosity optimization;
D O I：
10.1088/1674-1137/35/12/012
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The existing linear coupling theory and representation method are introduced briefly. The socalled local and global coupling is discussed in more detail. The vertical orbit distortion excited by a horizontal corrector is represented with the coupling parameters at the corrector and the observation point. The formula is used to measure the coupling in BEPC II. In order to correct the coupling, vertical correctors are used to change the vertical orbit through sextupoles by a least square method. We also introduce and review other frequently used coupling measurement/tuning methods used in our machine.
引用
收藏
页码：1143 / 1147
页数：5
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