Title :
Simulation of high current extraction from the ELSA RF photo-injector
Author :
Balleyguier, P. ; Guimbal, Ph
Author_Institution :
CEA, France
Abstract :
Extracting a high-charge bunch from a photo injector is a real challenge, because of space charge effects. Our goal is to extract a 100-nC bunch from our 144-MHz photo-injector, and to keep it a low emittance. The effect of HOM excitations has also to be considered for our a long term goal, which is to extract a burst of ten consecutive such bunches. This paper presents some simulations of basic phenomena (image charges, space charge limitation, RF mode excitation...), that we carried out to validate the tool that we use (the MAFIA-TS2 2D PIC solver), and the results of global simulations.
Keywords :
accelerator RF systems; electron accelerators; particle beam bunching; particle beam dynamics; particle beam extraction; particle beam injection; space charge; storage rings; 144 MHz; ELSA RF photoinjector; HOM excitations; MAFIA-TS2 2D PIC solver; RF mode excitation; global simulations; high current extraction; high-charge bunch; image charges; long term goal; space charge effects; space charge limitation; Boosting; Cathodes; Current density; Electron emission; Laser stability; Radio frequency; Space charge; Voltage; X-ray imaging; X-ray lasers;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1288775
