Bunch length beating in PLS storage ring

Kim, Yujong; Kim, C.; Kim, K.H.; Yang, Jun; Chun, M.H.; Yu, I.H.; Kwon, M.; Huang, Jung Yun; Nam, Seunggoo; Cho, M.H.; Namkung, W.; Ko, In Soo

doi:10.1109/pac.2001.987241

PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)

DOI: 10.1109/pac.2001.987241

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Bunch length beating in PLS storage ring

Yujong Kim

C. Kim²,

K.H. Kim³

et al.

Abstract: During the normal operation period in the Pohang Light Source (PLS) storage ring, the spontaneous bunch length oscillation or beating is generated by the nonlinear effects of the RF noise whose frequency is much lower than the bifurcation frequency. Due to the bunch length beating, we can not supply the uniform intensity beams to users. We have described the observed bunch length beating and its mechanism in the PLS storage ring with a simulation.

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RF noise driven dipole mode parametric resonance

Kim

Kim²,

Kim³

et al.

PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)

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In the Pohang Light Source (PLS) storage ring, we have occasionally experienced the abnormal spontaneous beam lifetime reduction and strong longitudinal damping. Due to the abnormal beam lifetime reduction, available beam time is reduced substantially. From the recent data analysis of the PLS longitudinal feedback system (LFS) and the streak camera, we have found that the abnormal phenomena can be generated by the RF noise via the dipole mode parametric resonance of the RF phase modulation. We describe the observation of the dipole mode parametric resonance driven by the RF noise and compare it with a simulation result in the PLS storage ring.

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RF noise driven dipole mode parametric resonance

Kim

Kim²,

Kim³

et al.

PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)

Self Cite

View full text Add to dashboard Cite

show abstract

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Bunch length beating in PLS storage ring

Cited by 1 publication

References 5 publications

RF noise driven dipole mode parametric resonance

RF noise driven dipole mode parametric resonance

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