Integrated numerical modeling of a laser gun injector

Author

Liu, H. ; Benson, S. ; Bisognano, J. ; Liger, P. ; Neil, G. ; Neuffer, D. ; Sinclair, C. ; Yunn, B.

Author_Institution

CEBAF, Newport News, VA, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

3663

Abstract

CEBAF is planning to incorporate a laser gun injector into the linac front end as a high-charge cw source for a high-power free electron laser and for nuclear physics. This injector consists of a DC laser gun, a buncher, a cryounit and a chicane. The performance of the injector is predicted based on integrated numerical modeling using POISSON, SUPERFISH and PARMELA. The point-by-point method incorporated into PARMELA by McDonald (1988) is chosen for space charge treatment. The concept of “conditioning for final bunching” is employed to vary several crucial parameters of the system for achieving highest peak current while maintaining low emittance and low energy spread. Extensive parameter variation studies show that the design will perform better than the specifications for FEL operations aimed at industrial applications and fundamental scientific research. The calculation also shows that the injector will perform as an extremely bright cw electron source

Keywords

beam handling techniques; free electron lasers; particle beam diagnostics; physics computing; space charge; FEL; PARMELA; POISSON; SUPERFISH; cw electron source; emittance; energy spread; high-power free electron laser; laser gun injector; numerical modeling; point-by-point method; space charge; Electron sources; Free electron lasers; Laser modes; Laser theory; Linear particle accelerator; Nuclear physics; Numerical models; Predictive models; Space charge; Space technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.309751

Filename

309751