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Title: Echo-enabled Harmonic Generation Free Electron Laser

Abstract

In this paper, we systematically study the echo-enabled harmonic generation (EEHG) free electron laser (FEL). The EEHG FEL uses two modulators in combination with two dispersion sections that allow to generate in the beam a high harmonic density modulation starting with a relatively small initial energy modulation of the beam. After presenting analytical theory of the phenomenon, we address several practically important issues, such as the effect of incoherent synchrotron radiation in the dispersion sections, and the beam transverse size effect in the modulator. Using a representative realistic set of beam parameters, we show how the EEHG scheme enhances the FEL performance and allows to generate a fully (both longitudinally and transversely) coherent radiation. As an example, we demonstrate that 5 nm coherent soft x-rays with GW peak power can be generated directly from the 240 nm seeding laser using the proposed EEHG scheme.

Authors:
;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
944556
Report Number(s):
SLAC-PUB-13474
Journal ID: ISSN 1098-4402; TRN: US0900592
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article
Journal Name:
Physical Review Special Topics - Accelerators and Beams
Additional Journal Information:
Journal Name: Physical Review Special Topics - Accelerators and Beams; Journal ID: ISSN 1098-4402
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; COHERENT RADIATION; FREE ELECTRON LASERS; HARMONIC GENERATION; HARMONICS; LASERS; MODULATION; PEAK LOAD; PERFORMANCE; SYNCHROTRON RADIATION; Accelerators,ACCPHY

Citation Formats

Xiang, D, Stupakov, G, and /SLAC. Echo-enabled Harmonic Generation Free Electron Laser. United States: N. p., 2008. Web. doi:10.1103/PhysRevSTAB.11.024001.
Xiang, D, Stupakov, G, & /SLAC. Echo-enabled Harmonic Generation Free Electron Laser. United States. https://doi.org/10.1103/PhysRevSTAB.11.024001
Xiang, D, Stupakov, G, and /SLAC. Thu . "Echo-enabled Harmonic Generation Free Electron Laser". United States. https://doi.org/10.1103/PhysRevSTAB.11.024001. https://www.osti.gov/servlets/purl/944556.
@article{osti_944556,
title = {Echo-enabled Harmonic Generation Free Electron Laser},
author = {Xiang, D and Stupakov, G and /SLAC},
abstractNote = {In this paper, we systematically study the echo-enabled harmonic generation (EEHG) free electron laser (FEL). The EEHG FEL uses two modulators in combination with two dispersion sections that allow to generate in the beam a high harmonic density modulation starting with a relatively small initial energy modulation of the beam. After presenting analytical theory of the phenomenon, we address several practically important issues, such as the effect of incoherent synchrotron radiation in the dispersion sections, and the beam transverse size effect in the modulator. Using a representative realistic set of beam parameters, we show how the EEHG scheme enhances the FEL performance and allows to generate a fully (both longitudinally and transversely) coherent radiation. As an example, we demonstrate that 5 nm coherent soft x-rays with GW peak power can be generated directly from the 240 nm seeding laser using the proposed EEHG scheme.},
doi = {10.1103/PhysRevSTAB.11.024001},
url = {https://www.osti.gov/biblio/944556}, journal = {Physical Review Special Topics - Accelerators and Beams},
issn = {1098-4402},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {12}
}