Collective Effects in the NICA Collider

Collective effects in the NICA collider are considered taking into account the results of calculations of induced electromagnetic fields (wakes) and coupling impedances of vacuum-chamber elements [1]. Coulomb shifts of longitudinal and transverse oscillations are considered and the stability of cohe...

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Bibliographic Details
Published in:Physics of particles and nuclei letters 2020-07, Vol.17 (4), p.456-462
Main Authors: Zenkevich, P. R., Kolomiets, A. A.
Format: Article
Language:English
Subjects:
Electromagnetic fields
Landau damping
Particle and Nuclear Physics
Physics
Physics and Astronomy
Physics and Technique of Accelerators
Stability analysis
Transverse oscillation
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Summary:Collective effects in the NICA collider are considered taking into account the results of calculations of induced electromagnetic fields (wakes) and coupling impedances of vacuum-chamber elements [1]. Coulomb shifts of longitudinal and transverse oscillations are considered and the stability of coherent oscillations in the presence of these shifts is analyzed; their influence is significant, since it can lead to the Loss of Landau Damping (LLD). Special attention is given to transverse head–tail instabilities and longitudinal instabilities caused by High-Order Modes (HOM) of the cavities. Recommendations on the suppression of instabilities are formulated.
ISSN:1547-4771
1531-8567
DOI:10.1134/S1547477120040500