| Preprint | |
| Report number | CERN-ACC-SLIDES-2019-0001 |
| Title | Beam Instabilities in Circular Particle Accelerators |
| Author(s) | Metral, Elias (CERN) |
| Publication | 2019 |
| Imprint | 06 Jun 2019 |
| Number of pages | 165 |
| Subject category | Accelerators and Storage Rings |
| Keywords | Bunched-beam coherent instabilities ; Longitudinal transverse ; Chromaticity ; Impedance ; Low-intensity ; High-intensity ; Transverse damper |
| Abstract | The theory of impedance-induced bunched-beam coherent instabilities is reviewed following Laclare's formalism, adding the effect of an electronic damper in the transverse plane. Both single-bunch and coupled-bunch instabilities are discussed, both low-intensity and high-intensity regimes are analyzed, both longitudinal and transverse planes are studied, and both short-bunch and long-bunch regimes are considered. Two similar approaches for coherent instabilities using the linearised Vlasov equation (and Garnier-Laclare’s formalism) are presented, leading to two “new” Vlasov solvers: for transverse instabilities, GALACTIC (GArnier-LAclare Coherent Transverse Instabilities Code) and for longitudinal instabilities, GALACLIC (GArnier-LAclare Coherent Longitudinal Instabilities Code). Observables and mitigation measures are also examined. |
| Submitted by | [email protected] |
Record created 2019-06-21, last modified 2021-07-27
