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arXiv 1202.0751physics.acc-ph
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ILC正电子源的自旋跟踪

Spin Tracking at the ILC Positron Source

V. Kovalenko, O. S. Adeyemi, A. Hartin, G. Moortgat-Pick, L. Malysheva, S. Riemann, F. Staufenbiel, A. Ushakov

摘要:

为了实现未来直线对撞机的物理目标,电子束和正电子束的偏振是非常重要的。国际直线对撞机(ILC)的基线设计预见了一个基于螺旋波荡器的e+源。这种光源提供高亮度和偏振。ILC计划的正电子源是基于螺旋波荡器系统,可以提供60%的正电子极化。为了确保在e-和e+束从源到相互作用区域的传输期间没有显著的极化损失,必须在所有可能导致极化损失的传输元件中包括精确的自旋跟踪,即初始加速结构、阻尼环、自旋旋转器、主直线加速器和束传输系统。特别是,需要研究极化正电子束的动力学。在谈话中,最近的结果,正电子自旋跟踪模拟的源。还讨论了源元件几何形状对正电子产额和极化的影响。

英文摘要:

In order to achieve the physics goals of future Linear Colliders, it is important that electron and positron beams are polarized. The baseline design at the International Linear Collider (ILC) foresees an e+ source based on helical undulator. Such a source provides high luminosity and polarizations. The positron source planned for ILC is based on a helical undulator system and can deliver a positron polarization of 60%. To ensure that no significant polarization is lost during the transport of the e- and e+ beams from the source to the interaction region, precise spin tracking has to be included in all transport elements which can contribute to a loss of polarization, i.e. the initial accelerating structures, the damping rings, the spin rotators, the main linac and the beam delivery system. In particular, the dynamics of the polarized positron beam is required to be investigated. In the talk recent results of positron spin tracking simulation at the source are presented. The positron yield and polarization are also discussed depending on the geometry of source elements.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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