Single bunch longitudinal measurements of the Cornell Electron-Positron Storage Ring with the superconducting RF cavities

Holtzapple, R.; Rice, D.

doi:10.1109/pac.2001.988160

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…(This effect was already presented in the bunch lengthening seen in Fig. 10, and the associated remarks that the last bunch had such a large variation in bunch length is likely due to the large variation in current of the last bunch in the trains [8].) A simple way to view the effect of the wakefield on subsequent bunches is to perform a Taylor series expansion of the wakefield about the equilibrium position of the bunch.…”

Section: -10mentioning

confidence: 65%

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Measurements of bunch motion due to the longitudinal dipole-coupled bunch instability at the Cornell Electron-Positron Storage Ring

Holtzapple

Billing

2002

Phys. Rev. ST Accel. Beams

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In the past, a longitudinal dipole-coupled bunch instability had limited high current operation at the Cornell Electron-Positron Storage Ring (CESR) and resulted in a degradation of luminosity performance. A longitudinal feedback system successfully damps this instability, and the exchange of superconducting rf cavities for normal conducting rf cavities in CESR has further reduced the instability's strength. A description of the longitudinal dynamics with the instability present are described in this paper along with detailed measurements of the instability using a dual-axis synchroscan streak camera. The measurements were made on single trains of bunches, multiple trains, and colliding beams. These measurements give a characterization of the instability's degradation of luminosity, modes of oscillation, and bunch distribution changes.

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Section: -10mentioning

confidence: 65%

“…The growth rate with a single bunch present in CESR is 0.10 mm͞mA, and the growth rate with multiple bunches is 0.21 mm͞mA [8]. The growth rate is almost a factor of 2 larger for trains than bunches.…”

Section: B Observation Of Multiple Trainsmentioning

confidence: 94%

Measurements of bunch motion due to the longitudinal dipole-coupled bunch instability at the Cornell Electron-Positron Storage Ring

Holtzapple

Billing

2002

Phys. Rev. ST Accel. Beams

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show abstract

“…(v) A comparison between bunch lengthening as a function of current, with a single bunch, or trains of bunches, is made. The growth rate with a single bunch present in CESR is 0.10 mm mA, and the growth rate with multiple bunches is 0.21 mm mA [8]. The growth rate is almost a factor of 2 larger for trains than bunches.…”

Section: B Observation Of Multiple Trainsmentioning

confidence: 92%

Measurements of Bunch Motion Due to the Longitudinal Dipole-Coupled Bunch Instability at the Cornell Electron-Positron Storage Ring

Holtzapple¹

2002

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In the past a longitudinal dipole-coupled bunch instability had limited high current operation at CESR and resulted in a degradation of luminosity performance. A longitudinal feedback system successfully damps this instability and the exchange of superconducting rf cavities for normal conducting rf cavities in CESR has further reduced the instability's strength. A description of the longitudinal dynamics with the instability present are described in this paper along with detailed measurements of the instability using a dual-axis synchroscan streak camera. The measurements were made on single trains of bunches, multiple trains, and colliding beams. These measurements give a characterization of the instability's degradation of luminosity, modes of oscillation, and bunch distribution changes.

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Estimations of Longitudinal Impedances Based on Temporal Beam Characteristic Parameter Extraction Method in Storage Ring Light Source

Zhao

Jin

et al. 2022

IEEE Trans. Instrum. Meas.

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Single bunch longitudinal measurements of the Cornell Electron-Positron Storage Ring with the superconducting RF cavities

Cited by 3 publications

References 3 publications

Measurements of bunch motion due to the longitudinal dipole-coupled bunch instability at the Cornell Electron-Positron Storage Ring

Measurements of bunch motion due to the longitudinal dipole-coupled bunch instability at the Cornell Electron-Positron Storage Ring

Measurements of Bunch Motion Due to the Longitudinal Dipole-Coupled Bunch Instability at the Cornell Electron-Positron Storage Ring

Estimations of Longitudinal Impedances Based on Temporal Beam Characteristic Parameter Extraction Method in Storage Ring Light Source

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