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  Synchronized beamline at FLASH2 based on high-order harmonic generation for two-color dynamics studies

Appi, E., Papadopoulou, C. C., Mapa, J. L., Jusko, C., Mosel, P., Schoenberg, A., et al. (2021). Synchronized beamline at FLASH2 based on high-order harmonic generation for two-color dynamics studies. Review of Scientific Instruments, 92(12): 123004. doi:10.1063/5.0063225.

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Appi, E.1, Author
Papadopoulou, C. C.1, Author
Mapa, J. L.1, Author
Jusko, C.1, Author
Mosel, P.1, Author
Schoenberg, A.1, Author
Stock, J.1, Author
Feigl, T.1, Author
Alisauskas, S.1, Author
Lang, T.1, Author
Heyl, C. M.1, Author
Manschwetus, B.1, Author
Brachmanski, M.1, Author
Braune, M.1, Author
Lindenblatt, Hannes Carsten2, Author           
Trost, F.1, Author
Meister, S.1, Author
Schoch, P.1, Author
Trabattoni, A.1, Author
Calegari, F.1, Author
Treusch, R.1, AuthorMoshammer, R.2, Author           Hartl, I.1, AuthorMorgner, U.1, AuthorKovacev, M.1, Author more..
Affiliations:
1external, ou_persistent22              
2Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society, ou_2025284              

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 Abstract: We present the design, integration, and operation of the novel vacuum
ultraviolet (VUV) beamline installed at the free-electron laser (FEL)
FLASH. The VUV source is based on high-order harmonic generation (HHG)
in gas and is driven by an optical laser system synchronized with the
timing structure of the FEL. Ultrashort pulses in the spectral range
from 10 to 40 eV are coupled with the FEL in the beamline FL26, which
features a reaction microscope (REMI) permanent endstation for
time-resolved studies of ultrafast dynamics in atomic and molecular
targets. The connection of the high-pressure gas HHG source to the
ultra-high vacuum FEL beamline requires a compact and reliable system,
able to encounter the challenging vacuum requirements and coupling
conditions. First commissioning results show the successful operation of
the beamline, reaching a VUV focused beam size of about 20 mu m at the
REMI endstation. Proof-of-principle photo-electron momentum measurements
in argon indicate the source capabilities for future two-color
pump-probe experiments.(c) 2021 Author(s). All article content, except
where otherwise noted, is licensed under a Creative Commons Attribution
(CC BY) license(http://creativecommons.org/licenses/by/4.0/).

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 Dates: 2021-12-01
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000731435700001
DOI: 10.1063/5.0063225
 Degree: -

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Title: Review of Scientific Instruments
  Abbreviation : Rev. Sci. Instrum.
Source Genre: Journal
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Publ. Info: Melville, NY : AIP Publishing
Pages: - Volume / Issue: 92 (12) Sequence Number: 123004 Start / End Page: - Identifier: ISSN: 0034-6748
CoNE: https://pure.mpg.de/cone/journals/resource/991042742033452