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Considerations on implementing EEHG with a strong linear chirp

Pop, Mihai LU ; Werin, Sverker LU ; Curbis, Francesca LU orcid and Quin, Weilun (2019) 39th International Free-Electron Laser Conference, FEL 2019 In Proceedings of the 39th International Free-Electron Laser Conference, FEL 2019 p.262-265
Abstract

Due to the stochastic nature of SASE radiation its longitudinal coherence is limited to a small fraction of the electron bunch. By pre-bunching the electrons before entering a radiator, the FEL radiation is ensured to have the same initial phase all through the bunch. Echo enabled harmonic generation (EEHG) is a technique that, by cleverly using two modulators and two dispersive sections, creates microbunches of electrons at a high harmonic of the seed laser used in the modulators. In this paper we will present some of the challenges of using this technique in combination with a strongly chirped beam and indicate a few ways to overcome said challenges.

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author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Proceedings of the 39th International Free-Electron Laser Conference, FEL 2019
series title
Proceedings of the 39th International Free-Electron Laser Conference, FEL 2019
pages
4 pages
publisher
JACoW Publishing
conference name
39th International Free-Electron Laser Conference, FEL 2019
conference location
Hamburg, Germany
conference dates
2019-08-26 - 2019-08-30
external identifiers
  • scopus:85086272847
ISBN
9783954502103
DOI
10.18429/JACoW-FEL2019-TUP090
language
English
LU publication?
yes
id
e05f7dac-fb7c-43b4-870c-11de451f3995
date added to LUP
2020-06-29 10:55:59
date last changed
2025-10-14 13:10:10
@inproceedings{e05f7dac-fb7c-43b4-870c-11de451f3995,
  abstract     = {{<p>Due to the stochastic nature of SASE radiation its longitudinal coherence is limited to a small fraction of the electron bunch. By pre-bunching the electrons before entering a radiator, the FEL radiation is ensured to have the same initial phase all through the bunch. Echo enabled harmonic generation (EEHG) is a technique that, by cleverly using two modulators and two dispersive sections, creates microbunches of electrons at a high harmonic of the seed laser used in the modulators. In this paper we will present some of the challenges of using this technique in combination with a strongly chirped beam and indicate a few ways to overcome said challenges.</p>}},
  author       = {{Pop, Mihai and Werin, Sverker and Curbis, Francesca and Quin, Weilun}},
  booktitle    = {{Proceedings of the 39th International Free-Electron Laser Conference, FEL 2019}},
  isbn         = {{9783954502103}},
  language     = {{eng}},
  pages        = {{262--265}},
  publisher    = {{JACoW Publishing}},
  series       = {{Proceedings of the 39th International Free-Electron Laser Conference, FEL 2019}},
  title        = {{Considerations on implementing EEHG with a strong linear chirp}},
  url          = {{http://dx.doi.org/10.18429/JACoW-FEL2019-TUP090}},
  doi          = {{10.18429/JACoW-FEL2019-TUP090}},
  year         = {{2019}},
}