Title :
News on beam dynamics at Super-ACO
Author :
Brunelle, P. ; Besson, J.-C. ; Cassinari, L. ; Cousin, J.-M. ; Darpentigny, J. ; Flynn, G. ; Girault, F. ; Lamarre, J.F. ; Nadji, A. ; Rieul, B. ; Sommer, M.
Author_Institution :
Lab. pour l´´Utilisation du Rayonnement Electromagn., Univ. de Paris-Sud, Orsay, France
Abstract :
The 0.8 GeV storage ring Super-ACO is now fully equipped with undulators. Two new undulators have been recently installed. Their effects on beam dynamics have been studied. In addition, new developments are continuously in progress in order to optimize the beam performances for the users. A beam position feedback system is now operational. A 500 MHz RF cavity allows one to reduce the bunch length and increase the FEL gain. A feedback system on betatron tunes has been tested using a very precise detection. Some experiments on beam dynamics have been performed in order to understand and improve beam lifetime. The variation of tunes with momentum has been measured, for several configurations of undulators (up to 6 undulators closed), and compared with computed results
Keywords :
accelerator RF systems; accelerator cavities; beam handling equipment; feedback; particle beam bunching; particle beam diagnostics; particle beam dynamics; storage rings; wigglers; 0.8 GeV; 500 MHz; RF cavity; Super-ACO; beam dynamics; beam lifetime; beam performances; beam position feedback system; betatron tunes; bunch length; storage ring; undulators; Free electron lasers; Laser feedback; Laser tuning; Optical feedback; Radio frequency; Stability; Storage rings; Structural beams; System testing; Undulators;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.794176
