Title :
Effects of frequency spreads on beam breakup instabilities in linear accelerators
Author :
Colombant, D.G. ; Lau, Y.Y.
Author_Institution :
US Naval Res. Lab., Washington, DC, USA
Abstract :
Structure mode frequency spreads are shown to have a rather different influence on beam breakup growths than betatron frequency spreads. Analytic and numerical studies show that a finite spread in the breakup mode frequency leads to an algebraic decay of the beam breakup instabilities even if the quality factor Q→∞. Asymptotic formulas and the time scale for this phase mixing to occur are presented. Effects of stagger tuning are examined numerically
Keywords :
beam handling techniques; linear accelerators; particle beam diagnostics; algebraic decay; beam breakup instabilities; breakup mode frequency; linear accelerators; numerical studies; phase mixing; stagger tuning; structure mode frequency spreads; time scale; Damping; Dispersion; Electron beams; Frequency conversion; Linear accelerators; Optical coupling; Particle beams; Plasma accelerators; Q factor; Tuning;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.73392
