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单束流
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  single beam current
     By many-particle simulation, longitudinal instability of BEPC ring is analysed and dependence of bunch length on single beam current and the threshold current are given. Simulation results go well with the measurement results.
     采用多粒子模拟方法,分析了北京正负电子对撞机(BEPC)储存环纵向不稳定性,给出了BEPC储存环束团长度与单束流强的关系,得出了阈值流强.模拟结果与BEPC95年4月实测结果符合较好.
短句来源
  相似匹配句对
     Beam Crystallizations
     晶化
短句来源
     Beam Chopper
     调制器
短句来源
     A ROTARY,SINGLE-PROBE,DOUBLE-PROFILES BEAM SCANNER
     旋转式针双截面扫描仪
短句来源
     BEAM LOADING EFFECTS IN R. F. SINGLECAVITY ACCELERATOR
     高频腔加速器的负载效应
短句来源
     A rotary single-probe double-profile beam scanner
     环形针双截面测量技术
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By many-particle simulation, longitudinal instability of BEPC ring is analysed and dependence of bunch length on single beam current and the threshold current are given.Simulation results go well with the measurement results.

采用多粒子模拟方法,分析了北京正负电子对撞机(BEPC)储存环纵向不稳定性,给出了BEPC储存环束团长度与单束流强的关系,得出了阈值流强.模拟结果与BEPC95年4月实测结果符合较好.

An analytic treatment of multi-bunch potential well distortion for a twobeam storage ring is presented. The longitUdinal wake effects are separated into: the mode loss, the synchrotron tUne shift (both due to potential well distortion) and the coherent multi-bunch coupling. Here, only the first two effects are studied. Resulting simple analytic formulas describe the mode loss and the synchrotron tune shift experienced by a given bunch within the two-beam, as a function of the high order mode's parameters. One...

An analytic treatment of multi-bunch potential well distortion for a twobeam storage ring is presented. The longitUdinal wake effects are separated into: the mode loss, the synchrotron tUne shift (both due to potential well distortion) and the coherent multi-bunch coupling. Here, only the first two effects are studied. Resulting simple analytic formulas describe the mode loss and the synchrotron tune shift experienced by a given bunch within the two-beam, as a function of the high order mode's parameters. One can get immediately a simple quantitative answer in term of the mode loss and the synchrotron tUne shift experienced by each bunch form these formulas, so we can know how to modify the existing configuration of parasitic cavity resonance (via frequency tuning) so that the resulting potenhal well distortion effects are minimized. When the RF cavities are symmetrically distributed about the interaction points, the two beams will have same beam loading effects, so we can compensate the phase shift of the tWo beam using the same method as in one beam case.

分析研究了双束流储存环上的束流负载效应.束团纵向尾场的作用分别为:能量损失、同步频移和耦合束不稳定性,这里只研究前两个方面.以来团连续分布的束团串情形和均匀分布情形为例,给出了同步相移、频移与高次模参数及高频腔分布的关系.研究结果有助于优化高频腔的工作模式(通过调节调谐杆的位置来改变高次模的频率)和环上束团的分布,以减小束流负载效应.当高频腔关于对撞点对称分布时,正负电子的束流负载效应相同,可以用补偿单束流负载效应的方法来补偿正负电子束团的相位.

The method to calculate the RF cavity higher-order modes (HOMs) power generated by unequally spaced and populated bunches in the storage rings with single beam and colliding beams is developed and presented in this paper. The corresponding analytical formulas for calculating the HOMs power are derived.

通过分析束流频谱与高频腔高次模的相互作用,提出了计算单束流和双束流储存环中非均匀束团产生的高频腔高次模功率的方法,推导出了这两种情况下的一般通用公式,并对所得到的解析结果进行了比较和讨论.

 
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