Simulation of high current extraction from the ELSA RF photo-injector

Author

Balleyguier, P. ; Guimbal, Ph

Author_Institution

CEA, France

Volume

3

fYear

2003

fDate

12-16 May 2003

Firstpage

2053

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1288775

Filename

1288775