Using a double-frequency RF system to facilitate on-axis beam accumulation in a storage ring

Jiang, Bingyan; Zhao, Zhengyuan; Tian, Saike; Zhang, Ming-Song; Zhang, Q.L.

doi:10.1016/j.nima.2016.01.024

Cited by 13 publications

(5 citation statements)

References 16 publications

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“…Beam manipulation in the longitudinal phase can be used to generate coherent radiation (Ratner & Chao, 2010) and beam dynamics in the longitudinal phase space to enable exploration of a new injection scheme (Kim et al, 2019;Aiba et al, 2015;Jiang et al, 2016;Jiang & Xu, 2018;Kuske et al, 2020). These goals invoke a need to measure the longitudinal beam profile.…”

Section: Measurement Of the Longitudinal Phase Space Profile With Instabilitymentioning

confidence: 99%

Single-shot measurement of longitudinal phase space beam profile in an electron storage ring

Kim¹,

Jang²,

Oh³

et al. 2022

J Synchrotron Radiat

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A novel scheme to measure the longitudinal emittance and phase space profile in an electron storage ring by using correlations between time and the vertical coordinate, and between energy and the horizontal coordinate, is proposed. This longitudinal profile measurement scheme will help to demonstrate recent results of advanced studies for manipulating the longitudinal beam profile and for investigating beam instability in an electron storage ring.

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Section: Measurement Of the Longitudinal Phase Space Profile With Instabilitymentioning

confidence: 99%

Single-shot measurement of longitudinal phase space beam profile in an electron storage ring

Kim¹,

Jang²,

Oh³

et al. 2022

J Synchrotron Radiat

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“…For such a small DA, an on-axis "swap-out" injection [38] or a longitudinal injection [e.g. [39][40][41][42][43] can be used for the beam injection. 1), the horizontal natural emittance ε 0 scales approximately as E 2 /N b 3 .…”

Section: Linear Optics Designmentioning

confidence: 99%

Design study of APS-U-type hybrid-MBA lattice for mid-energy DLSR

2021

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In recent years, a new generation of storage ring-based light sources, known as diffractionlimited storage rings (DLSRs), whose emittance approaches the diffraction limit for the range of X-ray wavelengths of interest to the scientific community, has garnered significant attention worldwide. Researchers have begun to design and build DLSRs. Among various DLSR proposals, the hybrid multibend achromat (H-MBA) lattice enables sextupole strengths to be maintained at a reasonable level when minimizing the emittance; hence, it has been adopted in many DLSR designs. Based on the H-7BA lattice, the design of the Advanced Photon Source Upgrade Project (APS-U) can effectively reduce emittance by replacing six quadrupoles with anti-bends. Herein, we discuss the feasibility of designing an APS-U-type H-MBA lattice for the Southern Advanced Photon Source, a mid-energy DLSR light source with ultralow emittance that has been proposed to be built adjacent to the China Spallation Neutron Source. Both linear and nonlinear dynamics are optimized to obtain a detailed design of this type of lattice. The emittance is minimized, while a sufficiently large dynamic aperture (DA) and momentum acceptance (MA) are maintained. A design comprising 36 APS-U type H-7BAs, with an energy of 3 GeV and a circumference of 972 m, is achieved. The horizontal natural emittance is 20 pm•rad, with a horizontal DA of 5.8 mm, a vertical DA of 4.5 mm, and an MA of 4%, as well as a long longitudinal damping time of 120 ms. Subsequently, a few modifications are performed based on the APS-U-type lattice to reduce the longitudinal damping time from 120 to 44 ms while maintaining other performance parameters at the same level.

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“…研究表明, 将两种优化方法交替使用, 其效果优于单独使用其中任何一种方法 [43] . [50,51] , 以及三高频频率的纵向注入方法 [52] . 其中, 三高频频率纵向注入(图5(d)) [52] , 将基频腔与二次谐波腔、三次谐波腔组合起来, 形成一个更大的相稳定区, 可以有效降低对快速冲击器脉宽的要求.…”

Section: 在算法的演化过程中 Mopso能在当前解集中不断馈unclassified

Physics issues of the diffraction-limited storage ring light source

Zhao

Liu

et al. 2020

Chin. Sci. Bull.

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Using a double-frequency RF system to facilitate on-axis beam accumulation in a storage ring

Cited by 13 publications

References 16 publications

Single-shot measurement of longitudinal phase space beam profile in an electron storage ring

Single-shot measurement of longitudinal phase space beam profile in an electron storage ring

Design study of APS-U-type hybrid-MBA lattice for mid-energy DLSR

Physics issues of the diffraction-limited storage ring light source

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