Calculations of space-charge tune shifts in storage rings with extremely short bunches and small bunch spacing

IF 1.5 3区 物理与天体物理 Q3 PHYSICS, NUCLEAR Physical Review Accelerators and Beams Pub Date : 2024-09-18 DOI:10.1103/physrevaccelbeams.27.094201
Zihang Zhao, Na Wang, Haisheng Xu, Zhilong Pan
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Abstract

Space-charge tune shifts can affect the beam quality in storage rings. Laslett’s method, a classical approach for calculating space-charge tune shifts, may not hold valid assumptions for rings with extremely short bunches and small bunch spacing, such as in steady-state microbunching (SSMB) storage rings. To overcome this limitation, we have developed new formulas that are suitable for arbitrary bunch lengths and spacings for calculating space-charge tune shifts. Additionally, simplified formulas have been provided for the calculations of space-charge tune shifts specifically in the context of extremely short bunch lengths. Numerical computations were carried out to demonstrate the validity of these newly derived formulas. Moreover, the formulas were applied to compute the space-charge tune shifts in an SSMB storage ring characterized by typical parameters.

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计算极短束和小束间距存储环中的空间电荷调变
空间电荷调整偏移会影响存储环的光束质量。拉斯莱特方法是计算空间电荷调谐偏移的经典方法,但对于束长极短、束间距极小的光环,例如稳态微束(SSMB)存储光环,该方法可能无法成立。为了克服这一局限,我们开发了适用于任意束长和束距的新公式,用于计算空间电荷调谐偏移。此外,我们还专门针对极短束长提供了空间电荷调谐偏移的简化计算公式。为了证明这些新推导公式的有效性,我们进行了数值计算。此外,这些公式还被应用于计算具有典型参数特征的 SSMB 储存环中的空间电荷调谐偏移。
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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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