Title :
Recent progress in the development of the bunch feedback systems for KEKB
Author :
Kikutani, E. ; Kasuga, T. ; Minagawa, Y. ; Obina, T. ; Tobiyama, M.
Author_Institution :
Nat. Lab. for High Energy Phys., Ibaraki, Japan
Abstract :
In KEKB, which is a B-factory project at KEK, the bunch spacing is very short, only 2 ns, and the number of the bunches comes up to about 5000 per ring. In order to cure the instabilities due to the high beam current, we will use bunch feedback systems in KEKB rings. Recently we developed the new position detection system and made a prototype of the signal process system for the feedback systems. Using these tools and accelerating cavities as the kicker we performed an experiment for checking a longitudinal feedback system. The Robinson instability which was intentionally excited was successfully damped with a short damping time
Keywords :
accelerator cavities; beam handling techniques; electron accelerators; particle beam diagnostics; particle beam stability; storage rings; B-factory; KEKB; Robinson instability; accelerating cavities; bunch feedback systems; bunch spacing; damping time; high beam current; instabilities; kicker; longitudinal feedback system; position detection system; signal process system; Band pass filters; Electrodes; Feedback; Laboratories; Prototypes; Pulse circuits; RF signals; Radio frequency; Signal processing; Structural beams;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505673
