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arXiv 1202.0764physics.acc-ph
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ILC直线加速器-环形正电子束线的去极化

Depolarization in the ILC Linac-to-Ring Positron Beamline

V. Kovalenko, G. Moortgat-Pick, Sabine Riemann, Andriy 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很重要的。计划用于国际直线对撞机(ILC)的正电子源是基于螺旋波荡器系统,可以提供正电子偏振度为60%的偏振束。为了确保在电子束和正电子束从源到相互作用区域的传输期间没有显著的极化损失,自旋跟踪必须包括在所有可能导致极化损失的传输元件中。它们是正电子源、阻尼环、自旋旋转器、主直线加速器和束流传输系统。特别是,需要研究极化正电子束的动力学。本文介绍了在PLTR束线上进行的正电子自旋跟踪和去极化研究结果。

英文摘要:

To achieve the physics goals of future Linear Colliders, it is important that electron and positron beams are polarized. The positron source planned for the International Linear Collider (ILC) is based on a helical undulator system and can deliver a polarised beam with positron polarization of 60%. To ensure that no significant polarization is lost during the transport of the electron and positron beams from the source to the interaction region, spin tracking has to be included in all transport elements which can contribute to a loss of polarization. These are the positron source, the damping ring, 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. The results of positron spin tracking and depolarization study at the Positron-Linac-To-Ring (PLTR) beamline are presented.

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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