偶极磁场中束流诱导电子云共振的研究

J. Calvey, W. Hartung, J. Makita, M. Venturini
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引用次数: 2

摘要

加速器中低能电子的积聚,被称为电子云,会严重损害机器的性能。在一定的光束条件下,光束可以与云动力学发生共振,加速电子的积累。本文将研究两种这样的效应:多冲击共振,其中云的发展时间与束间距共振;回旋共振,其中电子在磁场中的回旋周期是束间距的倍数。用安装在康奈尔电子存储环(CESR)上的延迟场分析仪在偶极子场中直接研究了这两种共振。这些测量结果得到了分析模型和计算机模拟的支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Studies of Beam Induced Electron Cloud Resonances in Dipole Magnetic Fields
The buildup of low energy electrons in an accelerator, known as electron cloud, can be severely detrimental to machine performance. Under certain beam conditions, the beam can become resonant with the cloud dynamics, accelerating the buildup of electrons. This paper will examine two such effects: multipacting resonances, in which the cloud development time is resonant with the bunch spacing, and cyclotron resonances, in which the cyclotron period of electrons in a magnetic field is a multiple of bunch spacing. Both resonances have been studied directly in dipole fields using retarding field analyzers installed in the Cornell Electron Storage Ring (CESR). These measurements are supported by both analytical models and computer simulations.
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来源期刊
自引率
0.00%
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0
审稿时长
3-8 weeks
期刊介绍: Physical Review Special Topics - Accelerators and Beams (PRST-AB), is a peer reviewed, purely electronic journal, distributed without charge to readers and funded by contributions from national laboratories. It covers the full range of accelerator science and technology: subsystem and component technologies, beam dynamics; accelerator applications; and design, operation, and improvement of accelerators used in science and industry. This includes accelerators for high-energy and nuclear physics, synchrotron radiation production, spallation neutron sources, medical therapy, and intense beam applications.
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