Title :
Mode-coupling-instability and bunch lengthening in proton machines
Author_Institution :
Fermi Nat. Accel. Lab., Batavia, IL, USA
Abstract :
In proton machines, potential-well distortion leads to small amount of bunch lengthening with minimal head-tail asymmetry. Longitudinal mode-mixing instability occurs at higher azimuthal modes. When the driving resonance is of broad-band, the threshold corresponds to Keil-Schnell criterion for microwave instability. When the driving resonance is narrower than the bunch spectrum, the threshold corresponds to a similar criterion derived before
Keywords :
beam handling techniques; particle beam stability; proton accelerators; Keil-Schnell criterion; broad-band resonance; bunch lengthening; bunch spectrum; driving resonance; higher azimuthal modes; longitudinal mode-mixing instability; microwave instability; minimal head-tail asymmetry; mode-coupling-instability; potential-well distortion; proton machines; Contracts; Educational institutions; Electron beams; Equations; Frequency; Impedance; Particle beams; Proton accelerators; Resonance; Synchrotrons;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505756
