Emittance growth study using 3DE code for the ERL injector cavities with various coupler configurations

Author

Greenwald, Z. ; Rubin, D.L.

Author_Institution

Cornell Univ., Ithaca, NY, USA

Volume

3

fYear

2003

fDate

12-16 May 2003

Firstpage

2056

Abstract

We compute emittance growth in electron bunches in high gradient accelerating cavities due to field nonlinearities and phase dependence associated with the finite bunch length. The determination of the emittance is based on tracking of individual particles through tabulated, 3-dimensional, electromagnetic fields. No symmetry is assumed. The fields for the structure, including input coupler, are calculated using MAFIA or MWS[CST Microwave Studio, User Guide, CSTGmbH, Budinger Str. D-64289 Darmstadt, Germany]. We examine particle trajectories RF focusing and emittance growth of injector cavities with various coupler configurations under study for Cornell Energy-Recovery-Linac proposal [V.Shemelin, SRF notes 021028-08].

Keywords

accelerator RF systems; accelerator cavities; electron beams; linear accelerators; particle beam bunching; particle beam dynamics; particle beam focusing; particle beam injection; particle beam stability; 3-dimensional electromagnetic fields; 3DE code; Cornell Energy-Recovery-Linac proposal; ERL injector cavities; MAFIA; MWS; coupler configurations; electron bunches; emittance growth study; field nonlinearities; finite bunch length; high gradient accelerating cavities; individual particles; input coupler; particle trajectories RF focusing; phase dependence; Acceleration; Boundary conditions; Couplings; Electromagnetic fields; Electron emission; Helium; Particle beam injection; Particle tracking; Proposals; Radio frequency;

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.2003.1288776

Filename

1288776