Title :
Calculation of the bunch lengthening threshold [particle accelerator]
Author :
Yu, X.T. ; Wurtele, J.S.
Author_Institution :
Dept. of Phys., MIT, Cambridge, MA, USA
Abstract :
A new analysis of the bunch lengthening instability, based on a single synchrotron mode in a distorted potential well, is presented. The nonlinearity of the wakefield plays a critical role. It distorts the equilibrium density from its Gaussian shape, which results in asymmetric corrections to the Sacherer equation. This modified equation will have unstable eigenmodes when the beam current reaches a threshold value. The calculated threshold agrees very well with our multiparticle simulation for SPEAR parameters
Keywords :
beam handling techniques; particle beam diagnostics; synchrotrons; SPEAR; Sacherer equation; bunch lengthening instability; distorted potential; synchrotron mode; wakefield; Damping; Electrons; Linear particle accelerator; Nonlinear equations; Physics; Plasma accelerators; Plasma density; Potential well; Shape; Synchrotrons;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309641
