Multi-bunch instability diagnostics via transverse feedback system in Shanghai Synchrotron Radiation Facility

Zhang Ning; Lai Longwei; Yuan Renxian; Yu Luyang

doi:10.11884/HPLPB202133.200212

Volume 33 Issue 4

May 2021

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Article Navigation > High Power Laser and Particle Beams > 2021 > 33(4): 044003

Zhang Manzhou, Wang Kun, Zhang Qinglei, et al. Compensations of double elliptical polarization undulator effects on the SSRF storage ring[J]. High Power Laser and Particle Beams, 2017, 29: 075103. doi: 10.11884/HPLPB201729.170014

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Zhang Ning, Lai Longwei, Yuan Renxian, et al. Multi-bunch instability diagnostics via transverse feedback system in Shanghai Synchrotron Radiation Facility[J]. High Power Laser and Particle Beams, 2021, 33: 044003. doi: 10.11884/HPLPB202133.200212

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Multi-bunch instability diagnostics via transverse feedback system in Shanghai Synchrotron Radiation Facility

doi: 10.11884/HPLPB202133.200212

Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China

Received Date: 2020-07-22
Rev Recd Date: 2020-12-08

Available Online: 2021-02-28

Publish Date: 2021-05-02

Abstract

Abstract

For investigating and tracing the multi-bunch transverse coupled instability caused by beam impedance and evaluating the suppressive effect to the instability by the newly updated Transverse Feedback System during the upgrade process of Shanghai Synchrotron Radiation Facility (SSRF) PHASE II, transverse beam motion in different states were recorded by diagnostics tool of feedback processor in the system, by which the evolution of dominate instability modes were analyzed respectively in steady-state, injection transient and growing-damping process. Growth/Damp rate as well as dependence of growth rate and beam current were calculated. Also, performance of the feedback system was evaluated. These research results provide data support for machine operation optimization.
- transverse coupled instability,
- growth/damp rate,
- transverse feedback,
- transient diagnostics,
- Shanghai Synchrotron Radiation Facility

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References(11)

References

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