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束流阻抗的
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  beam impedance
     The physics design of BEPCⅡ storage ring requires that the kicker magnets must have properties of wide uniform field region with high field uniformity and low beam impedance. In order to satisfy these requirements, a new slotted pipe kicker magnet is proposed.
     在国际上已有的冲击磁铁方案不能完全满足BEPCⅡ储存环注入系统对冲击磁铁宽均匀场区、高均匀度和低束流阻抗的设计要求的情况下 ,提出了一种新型冲击磁铁的设计思想 .
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  “束流阻抗的”译为未确定词的双语例句
     For the severe requirements of BEPC Ⅱ injecting kicker magnets, the two schemes of low impedance kicker magnets used in other accelerator labs in the world are not adaptive to the BEPC Ⅱ storage ring.
     由于BEPCⅡ储存环注入系统对冲击磁铁的设计要求比较高,国际上现有的两种低束流阻抗的冲击磁铁方案都不能完全满足其要求.
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  相似匹配句对
     Beam Crystallizations
     晶化
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     Beam Chopper
     调制器
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     Validity of coaxialwire method in impedance measurement
     同轴线方法测量耦合阻抗的有效性分析
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     Mechanical Energy Flow
     机械能
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  beam impedance
At 100 kW and a microperveance of about 2, and 30% efficiency the beam impedance is about 2500 ohms.
      
In lead oxide tubes the reduced beam impedance permits a thinner, and hence higher-capacitance, photolayer without increasing lag.
      
They can be clearly distinguished from the peaks representing beam impedance.
      
The beam impedance is a function of the beam current.
      


The physics design of BEPCⅡ storage ring requires that the kicker magnets must have properties of wide uniform field region with high field uniformity and low beam impedance. In order to satisfy these requirements, a new slotted pipe kicker magnet is proposed. The results from theoretical analysis and OPERA program simulation show that the kicker magnet satisfies all requirements of BEPCⅡ storage ring. In the range of Δ x =±20mm, the field uniformity is ±0.6% in the central plane, ±0.7% in the y =5mm...

The physics design of BEPCⅡ storage ring requires that the kicker magnets must have properties of wide uniform field region with high field uniformity and low beam impedance. In order to satisfy these requirements, a new slotted pipe kicker magnet is proposed. The results from theoretical analysis and OPERA program simulation show that the kicker magnet satisfies all requirements of BEPCⅡ storage ring. In the range of Δ x =±20mm, the field uniformity is ±0.6% in the central plane, ±0.7% in the y =5mm plane and ±2.9% in the y =10mm plane. The simulated results of MAFIA program also show that the beam impedance of the kicker magnet is lower than 0.022Ω, and it is less than the required value of 0.025Ω.

在国际上已有的冲击磁铁方案不能完全满足BEPCⅡ储存环注入系统对冲击磁铁宽均匀场区、高均匀度和低束流阻抗的设计要求的情况下 ,提出了一种新型冲击磁铁的设计思想 .理论分析和瞬态OPERA程序模拟计算的结果表明 ,在Δx =± 2 0mm的范围内 ,中心平面上场的均匀性为± 0 .6 % ,y =5mm的平面上场的均匀性为± 0 .7% ,y =10mm的平面上场的均匀性为± 2 .9% ,均优于BEPCⅡ储存环注入对冲击磁铁的设计要求 .MAFIA程序模拟计算的束流阻抗Z/n(eff)小于0 0 2 2Ω ,小于设计要求的 0 .0 2 5Ω .

To investigate the higher order mode (HOM) damping in the BEPCⅡ superconducting cavity (SC) when using HOM absorbers, simulations have been done for changing the position and the length as well as the thickness of ferrite of HOM damper, and for different positions and angles of taper. The optimized values under which the HOM impedance of the BEPCⅡ SC cavity will be trapped in the impedance threshold of the BEPCⅡ collider have been found. For verifying the simulation result mentioned above, HOM measurements on...

To investigate the higher order mode (HOM) damping in the BEPCⅡ superconducting cavity (SC) when using HOM absorbers, simulations have been done for changing the position and the length as well as the thickness of ferrite of HOM damper, and for different positions and angles of taper. The optimized values under which the HOM impedance of the BEPCⅡ SC cavity will be trapped in the impedance threshold of the BEPCⅡ collider have been found. For verifying the simulation result mentioned above, HOM measurements on the BEPCⅡ model cavity have been made, and the satisfied results for HOM damping are obtained. The distribution and magnitude of some potentially dangerous higher order modes have been found, which are basically consistent with the simulations.

BEPCⅡ 5 0 0MHz超导腔是BEPCⅡ储存环的关键设备 ,腔中高次模的分布和阻抗将很大程度上直接影响束流的稳定 .因此 ,研究BEPCⅡ超导腔的高次模分布和高次模吸收器的吸收效果对实现BEPCⅡ指标至关重要 .为此 ,通过改变高次模吸收器的位置、铁氧体吸收材料的长度、厚度以及腔的渐变过渡波导的角度等对BEPCⅡ超导腔高次模阻抗抑制进行了模拟优化研究 ,从而找到并确定了吸收器对高次模阻抗抑制的最优值 .同时 ,为证实模拟计算结果的正确性 ,对BEPCⅡ超导模型腔进行了高次模分布和吸收测量 ,得到了与计算一致的结果 .结果表明 ,经过细致优化腔的高次模吸收器 ,腔中大部分高次模被深度吸收了 ,那些具有潜在危险的高次模阻抗值降到了阈值以下 ,满足BEPCⅡ束流阻抗要求

For the severe requirements of BEPC Ⅱ injecting kicker magnets, the two schemes of low impedance kicker magnets used in other accelerator labs in the world are not adaptive to the BEPC Ⅱ storage ring. A new scheme of kicker magnets proposed in this article solves the difficult problem of BEPC Ⅱ kicker magnet design. And the successful construction of a prototype has demonstrated that the new scheme of kicker magnets is viable and the design of the kicker magnet structure is reasonable.

由于BEPCⅡ储存环注入系统对冲击磁铁的设计要求比较高,国际上现有的两种低束流阻抗的冲击磁铁方案都不能完全满足其要求.本文提出的一种新型冲击磁铁方案解决了BEPCⅡ冲击磁铁的设计难题,并且通过样机的成功研制,证明了这种方案对于BEPCⅡ来说是可行的,结构和工艺设计是合理的.

 
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