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Title: Simulation of the Microbunching Instability in Beam Delivery Systems for Free Electron Lasers

Abstract

In this paper, we examine the growth of the microbunching instability in the electron beam delivery system of a free electron laser (FEL). We present the results of two sets of simulations, one conducted using a direct Vlasov solver, the other using a particle-in-cell code Impact-Z with the number of simulation macroparticles ranging up to 100 million. Discussion is focused on the details of longitudinal dynamics and on numerical values of uncorrelated (slice) energy spread at different points in the lattice. In particular, we assess the efficacy of laser heater in suppression of the instability, and look at the interplay between physical and numerical noise in particle-based simulations.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
918950
Report Number(s):
SLAC-PUB-12944
TRN: US0806260
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Conference
Journal Name:
Conf.Proc.C070625:1179,2007
Additional Journal Information:
Conference: Prepared for Particle Accelerator Conference (PAC 07), Albuquerque, New Mexico, 25-29 Jun 2007
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; ELECTRON BEAMS; FREE ELECTRON LASERS; HEATERS; INSTABILITY; LASERS; SIMULATION; Accelerators,ACCPHY

Citation Formats

Pogorelov, I, /Northern Illinois U., Qiang, J, Ryne, R, Venturini, M, Zholents, A, /LBL, Berkeley, Warnock, R, and /SLAC. Simulation of the Microbunching Instability in Beam Delivery Systems for Free Electron Lasers. United States: N. p., 2007. Web. doi:10.1109/PAC.2007.4441022.
Pogorelov, I, /Northern Illinois U., Qiang, J, Ryne, R, Venturini, M, Zholents, A, /LBL, Berkeley, Warnock, R, & /SLAC. Simulation of the Microbunching Instability in Beam Delivery Systems for Free Electron Lasers. United States. https://doi.org/10.1109/PAC.2007.4441022
Pogorelov, I, /Northern Illinois U., Qiang, J, Ryne, R, Venturini, M, Zholents, A, /LBL, Berkeley, Warnock, R, and /SLAC. 2007. "Simulation of the Microbunching Instability in Beam Delivery Systems for Free Electron Lasers". United States. https://doi.org/10.1109/PAC.2007.4441022. https://www.osti.gov/servlets/purl/918950.
@article{osti_918950,
title = {Simulation of the Microbunching Instability in Beam Delivery Systems for Free Electron Lasers},
author = {Pogorelov, I and /Northern Illinois U. and Qiang, J and Ryne, R and Venturini, M and Zholents, A and /LBL, Berkeley and Warnock, R and /SLAC},
abstractNote = {In this paper, we examine the growth of the microbunching instability in the electron beam delivery system of a free electron laser (FEL). We present the results of two sets of simulations, one conducted using a direct Vlasov solver, the other using a particle-in-cell code Impact-Z with the number of simulation macroparticles ranging up to 100 million. Discussion is focused on the details of longitudinal dynamics and on numerical values of uncorrelated (slice) energy spread at different points in the lattice. In particular, we assess the efficacy of laser heater in suppression of the instability, and look at the interplay between physical and numerical noise in particle-based simulations.},
doi = {10.1109/PAC.2007.4441022},
url = {https://www.osti.gov/biblio/918950}, journal = {Conf.Proc.C070625:1179,2007},
number = ,
volume = ,
place = {United States},
year = {Fri Nov 02 00:00:00 EDT 2007},
month = {Fri Nov 02 00:00:00 EDT 2007}
}

Conference:
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