Landau damping effects and evolutions of energy spread in small isochronous ring

This paper presents the Landau damping effects on the microwave instability of a coasting long bunch in an isochronous ring due to finite energy spread and emittance. Our two-dimensional (2D) dispersion relation gives more accurate predictions of the microwave instability growth rates of short-wavel...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2014-11, Vol.763, p.674-687
Main Authors: Li, Yingjie, Wang, Lanfa, Lin, Fanglei
Format: Article
Language:English
Subjects:
2D dispersion relation
Energy spread
Isochronous ring
Landau damping
Microwave instability
Space charge field
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Summary:This paper presents the Landau damping effects on the microwave instability of a coasting long bunch in an isochronous ring due to finite energy spread and emittance. Our two-dimensional (2D) dispersion relation gives more accurate predictions of the microwave instability growth rates of short-wavelength perturbations than the conventional 1D formula. The long-term evolution of energy spread is also studied by measurements and simulations.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2014.06.070