Title :
On limitations on low-α rings performance due to ∇Z-instabilities
Author :
Dikansky, N.S. ; Pestrikov, D.V.
Author_Institution :
Budker Inst. of Nucl. Phys., Novosibirsk, Russia
Abstract :
We analyze collective instabilities of a bunch due to the radial gradient of the longitudinal impedance. One of the specific features of these collective effects is that decrements of collective synchrotron modes do not depend on the value of momentum compaction factor of the ring. This effect can limit the performance of the so-called low-α storage rings. It can be used for the damping of unstable modes of the synchrotron coherent oscillations as well
Keywords :
particle beam diagnostics; storage rings; synchrotrons; Nabla Z instabilities; collective instabilities; collective synchrotron modes; longitudinal impedance; low-α storage rings; momentum compaction factor; particle bunch; unstable modes; Compaction; Couplings; Damping; Electrodes; Energy loss; Impedance; Integral equations; Kernel; Particle beams; 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.1993.309758
