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arXiv physics/0106060physics.acc-ph
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NLC引出线束流能谱测量研究

Study of Beam Energy Spectrum Measurement in the NLC Extraction Line

Y. Nosochkov, T. O. Raubenheimer

摘要:

NLC引出线提供具有低β函数和2 cm色散的次级焦点,其可用于测量射束能谱。在这项研究中,跟踪模拟进行运输的0.5 TeV的电子束从相互作用点(IP)的次级焦点(SF),“测量”所得到的横向束剖面和重建中断的IP能量扩散。在模拟中,得到的能谱再现初始IP扩展合理,特别是与SF的垂直色散提供了更大的比例的色散的电子感应加速器束的大小。

英文摘要:

The NLC extraction line provides a secondary focal point with a low beta function and 2 cm dispersion which can be used for measurement of the beam energy spectrum. In this study, tracking simulations were performed to transport the 0.5 TeV electron beam from the Interaction Point (IP) to the secondary focus (SF), ``measure'' the resultant transverse beam profile and reconstruct the disrupted IP energy spread. In the simulation, the obtained energy spectrum reproduced the initial IP spread reasonably well, especially with the vertical dispersion at SF which provides larger ratio of dispersion to the betatron beam size.

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