The current knowledge of the transverse impedance of the CERN Proton Synchrotron (PS) has been established by theoretical computations, electromagnetic simulations and beam-based measurements at different energies. The transverse coherent tune and phase advance shifts as a func- tion of intensity have been measured in order to evaluate the total effective transverse impedance and its distribution in the accelerator. In order to understand the beam dynam- ics, the frequency dependence of the impedance budget has also been evaluated considering the individual contribution of several machine devices. 3D models of many PS ele- ments have been realized to perform accurate impedance simulations, while resistive wall and indirect space charge impedances have been evaluated with theoretical and numer- ical computations. Finally comparisons between the total budget and the measurement results are presented.
The Proton Synchrotron transverse impedance model / Persichelli, Serena; Migliorati, Mauro; Biancacci, Nicolò; S., Gilardoni; E., Métral; B., Salvant. - (2014), pp. 4096-4098. (Intervento presentato al convegno 5th International Particle Acceleration Conference tenutosi a Dresden (Ge) nel June 15-20 2014).
The Proton Synchrotron transverse impedance model
PERSICHELLI, SERENA;MIGLIORATI, Mauro;BIANCACCI, NICOLÒ;
2014
Abstract
The current knowledge of the transverse impedance of the CERN Proton Synchrotron (PS) has been established by theoretical computations, electromagnetic simulations and beam-based measurements at different energies. The transverse coherent tune and phase advance shifts as a func- tion of intensity have been measured in order to evaluate the total effective transverse impedance and its distribution in the accelerator. In order to understand the beam dynam- ics, the frequency dependence of the impedance budget has also been evaluated considering the individual contribution of several machine devices. 3D models of many PS ele- ments have been realized to perform accurate impedance simulations, while resistive wall and indirect space charge impedances have been evaluated with theoretical and numer- ical computations. Finally comparisons between the total budget and the measurement results are presented.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
