由大振幅粒子振荡引起的集电极环中的非线性场效应

IF 0.4 Q4 PHYSICS, NUCLEAR

Nuclear Physics and Atomic Energy Pub Date : 2022-12-25 DOI:10.15407/jnpae2022.04.230

M. Dolinska, N. Doroshko, O. Dolinskyy

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引用次数: 0

摘要

在FAIR项目框架内，计划建立收集器环(CR)，用于反质子和稀有同位素光束的有效冷却[1]。为了接收来自分离器的热光束，需要较大的接收量。本文研究了大的电子加速器振荡幅度和动量扩散对束流动力学的影响。利用解析表达式，计算了六极磁体驱动下的振幅相关调谐位移、四极磁体的条纹场和运动学效应。用精确的多圈粒子跟踪方法将所得结果与数值模拟结果进行了比较。考虑了大孔径四极杆的实际磁场形状，对其进行了跟踪分析。我们报告了对环的动态孔径的影响的定量研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Nonlinear field effects in the collector ring due to large-amplitude particle oscillations

In the frame of the FAIR project, the Collector Ring (CR) is planned to be built for efficient cooling of antiprotons and rare isotope beams [1]. In order to accept hot beam from separators large acceptances are required. This paper examines the effects which can influence the beam dynamics due to large betatron oscillation amplitude and momentum spread. Using analytic expressions, the amplitude-dependent tune shifts driven by sextupole magnets, the fringe field of quadrupole magnets, and kinematics effects have been calculated. The obtained results have been compared with numerical simulations by means of precise multi-turn particle tracing. The tracking analysis for the CR has been performed considering the real shape of the magnetic field of the wide aperture quadrupole. We report on quantitative studies of the effects on the dynamic aperture of the rings.

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来源期刊

Nuclear Physics and Atomic Energy PHYSICS, NUCLEAR-

CiteScore

0.70

自引率

33.30%

发文量

审稿时长

19 weeks

期刊介绍： The journal Nuclear Physics and Atomic Energy presents the publications on Nuclear Physics, Atomic Energy, Radiation Physics, Radioecology, Engineering and Methods of Experiment. The journal includes peer-reviewed articles which are completed works containing new results of theoretical and experimental researches and are of interest for the scientists, postgraduate students, engineers and for the senior students.