Interplay of space charge, intrabeam scattering, and synchrotron radiation in the Compact Linear Collider damping rings

IF 1.5 3区 物理与天体物理 Q3 PHYSICS, NUCLEAR Physical Review Accelerators and Beams Pub Date : 2024-06-12 DOI:10.1103/physrevaccelbeams.27.064403
M. Zampetakis, F. Antoniou, F. Asvesta, H. Bartosik, Y. Papaphilippou
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Abstract

Future ultralow emittance rings for e/e+ colliders require extremely high beam brightness and can thus be limited by collective effects. In this paper, the interplay of effects such as synchrotron radiation, intrabeam scattering (IBS), and space charge in the vicinity of excited betatron resonances is assessed. In this respect, two algorithms were developed to simulate IBS and synchrotron radiation effects and integrated in the pyorbit tracking code, to be combined with its widely used space charge module. The impact of these effects on the achievable beam parameters of the Compact Linear Collider (CLIC) damping rings was studied, showing that synchrotron radiation damping mitigates the adverse effects of IBS and space charge induced resonance crossing. The studies include also a full dynamic simulation of the CLIC damping ring cycle starting from the injection beam parameters. It is demonstrated that a careful working point choice is necessary, in order to accommodate the transition from detuning induced by lattice nonlinearities to space-charge dominated detuning and thereby avoid excessive losses and emittance growth generated in the vicinity of strong resonances.

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紧凑直线对撞机阻尼环中空间电荷、束内散射和同步辐射的相互作用
未来用于 e-/e+ 对撞机的超低幅射环需要极高的光束亮度,因此会受到集体效应的限制。本文评估了同步辐射、束内散射(IBS)和激发的贝塔特龙共振附近的空间电荷等效应的相互作用。在这方面,开发了两种算法来模拟 IBS 和同步辐射效应,并将其集成到 pyorbit 跟踪代码中,与广泛使用的空间电荷模块相结合。研究了这些效应对紧凑直线对撞机(CLIC)阻尼环可实现的束流参数的影响,结果表明同步辐射阻尼减轻了 IBS 和空间电荷引起的共振交叉的不利影响。研究还包括从注入束参数开始的 CLIC 阻尼环周期的全动态模拟。结果表明,为了适应从晶格非线性引起的失谐到空间电荷主导的失谐的转变,从而避免在强共振附近产生过多损耗和发射增长,必须谨慎选择工作点。
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来源期刊
Physical Review Accelerators and Beams
Physical Review Accelerators and Beams Physics and Astronomy-Surfaces and Interfaces
CiteScore
3.90
自引率
23.50%
发文量
158
审稿时长
23 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 sponsors from national and international laboratories and other partners. The articles are published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. 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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