Instabilities driven by the transverse impedance are proven to be one of the limitations for the high intensity reach of the CERN PS. Since several years, fast single bunch vertical instability at transition energy has been observed with the high intensity bunch serving the neutron Time-of-Flight facility (n-ToF). In order to better understand the instability mechanism, a dedicated measurement campaign took place. The results were compared with macro-particle simulations with PyHEADTAIL based on the new impedance model developed for the PS. Instability threshold and growth rate for different longitudinal emittances and beam intensities were studied.
Simulation of instability at transition energy with a new impedance model for CERN PS / Aumon, S.; Biancacci, N.; Migliorati, Mauro; Persichelli, S.; Sterbini, G.; Wang, N.. - (2016), pp. 1674-1677. (Intervento presentato al convegno 7th International Particle Acceleration Conference, tenutosi a Busan, Korea nel 8-13 May 2016).
Simulation of instability at transition energy with a new impedance model for CERN PS
MIGLIORATI, Mauro;
2016
Abstract
Instabilities driven by the transverse impedance are proven to be one of the limitations for the high intensity reach of the CERN PS. Since several years, fast single bunch vertical instability at transition energy has been observed with the high intensity bunch serving the neutron Time-of-Flight facility (n-ToF). In order to better understand the instability mechanism, a dedicated measurement campaign took place. The results were compared with macro-particle simulations with PyHEADTAIL based on the new impedance model developed for the PS. Instability threshold and growth rate for different longitudinal emittances and beam intensities were studied.| File | Dimensione | Formato | |
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