ID effects on beam dynamics in the SSRF-U storage ring

Tan, Li-Yuan; Tian, Shun-Qiang; Liu, Xin-Zhong; Wu, Xu; Zhang, Wen-Zhi

doi:10.1007/s41365-023-01322-z

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…gap of 6 mm. The 16CPMU has a length of 3.06 m, an 18 mm period length, a 6 mm minimum gap, and a peak magnetic field of 1.025 T [10,25].…”

Section: Closed Dual-canted Angle Adjustment For Canted Beamlinesmentioning

confidence: 99%

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Orbit stabilization for the new insertion devices in SSRF

Liu,

Xuan,

Tian

et al. 2024

J. Inst.

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During the Shanghai Synchrotron Radiation Facility (SSRF) beamline project, fourteen new insertion devices (IDs) have been successfully installed and transitioned to operation. However, these new IDs led to considerable closed orbit distortions in the SSRF storage ring. In the canted beamlines, the theoretical current values of dipoles required for the closed dual-canted angle were established, however, errors in the actual machine make a significant effect on closed orbit. To address this, an adjustment configuration, based on the response matrix, was developed for the closed dual-canted angles. Additionally, an orbit feedforward compensation system equipped with corrector coils, was employed. As a result, the maximum horizontal and vertical orbit distortions induced by the IDs were successfully decreased to less than 5.0 μm and 3.5 μm, respectively. Furthermore, a specialized local fast feedback system was designed to maintain the precise orbit and angle stability for the Hard X-ray Nanoprobe beamline.

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“…gap of 6 mm. The 16CPMU has a length of 3.06 m, an 18 mm period length, a 6 mm minimum gap, and a peak magnetic field of 1.025 T [10,25].…”

Section: Closed Dual-canted Angle Adjustment For Canted Beamlinesmentioning

confidence: 99%

“…The SSRF Phase-II Beamline Project started on November 20, 2016 with a 6-year construction period [7,8]. During this project's progression, the lattice of the SSRF storage ring underwent modifications [9,10]. Subsequently, several kinds of insertion devices (IDs) have been installed.…”

Section: Introductionmentioning

confidence: 99%

Orbit stabilization for the new insertion devices in SSRF

Liu,

Xuan,

Tian

et al. 2024

J. Inst.

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A seven-crystal spectrometer for high-energy resolution X-ray spectroscopy at Shanghai Synchrotron Radiation Facility

Mei,

Wang,

et al. 2024

NUCL SCI TECH

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Comparison of different longitudinal injection scenarios for achieving optimal performance in SAPS

Liu,

Zhao,

Chen

et al. 2024

J. Inst.

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The Southern Advanced Photon Source (SAPS) is a proposed fourth-generation diffraction-limited storage ring (DLSR) designed with a modified hybrid multibend achromat lattice, achieving a natural emittance as low as 33 pm. Given its limited dynamic aperture, the SAPS is not well suited to off-axis injection, with on-axis injection schemes proving a more favourable option. This paper highlights the advantages of longitudinal injection for SAPS, which employs a fast pulse kicker and multi-frequency RF systems. A systematic comparison is presented of the longitudinal injection schemes for double-frequency and triple-frequency RF systems. The effects of these schemes on circulating beam stretching, the time structure of the fast pulse kicker, RF parameter stability requirements, storage ring acceptance, and injection efficiency are considered. Based on these results, reasonable hardware specifications for the fast stripline kicker and RF system, as well as injector parameter requirements, are provided. These findings are crucial for SAPS to achieve longitudinal injection and can also serve as a reference for similar light sources.

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ID effects on beam dynamics in the SSRF-U storage ring

Cited by 3 publications

References 29 publications

Orbit stabilization for the new insertion devices in SSRF

Orbit stabilization for the new insertion devices in SSRF

A seven-crystal spectrometer for high-energy resolution X-ray spectroscopy at Shanghai Synchrotron Radiation Facility

Comparison of different longitudinal injection scenarios for achieving optimal performance in SAPS

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