Journal Article

PUBDB-2020-02865

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Novel Method for the Generation of Stable Radiation from Free-Electron Lasers at High Repetition Rates

Ackermann, S. (Corresponding author)DESY* ; Faatz, B.Extern* ; Grattoni, V.DESY* ; Kazemi, M. M.DESY* ; Lang, T.DESY* ; Lechner, C.DESY* ; Paraskaki, G.DESY* ; Zemella, J.DESY* ; Geloni, G.XFEL.EU* ; Serkez, S.XFEL.EU* ; Tanikawa, T.XFEL.EU* ; Hillert, W.CFEL*Extern*

2020
American Physical Society College Park, MD

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Please use a persistent id in citations: doi:10.1103/PhysRevAccelBeams.23.071302  doi:10.3204/PUBDB-2020-02865

Abstract: For more than a decade free-electron lasers (FELs) have been in operation, providing scientists from many disciplines with the benefits of ultrashort, nearly transversely coherent radiation pulses with wavelengths down to the Ångstrom range. If no further techniques are applied, the FEL will only amplify radiation from the stochastic distributed electron density in the electron bunch. Contemporary developments aim at producing stable and single-mode radiation by preparing an electron bunch with favorable longitudinal electron density distributions using magnets and conventional laser pulses (seed), hence the name “seeding.” In recent years, short wavelength FELs at high electron beam energies and high repetition rates were proposed and built. At those repetition rates, an external seed with sufficient power to manipulate the electron beam cannot be provided by present state-of-the-art laser systems, thus no external seeding scheme could be applied yet. In this paper, we present ways to seed FELs to generate short wavelength radiation at high repetition rates, making use of tested electron beam manipulation schemes. For our parameter study, we used the parameters of FLASH, the free-electron laser in Hamburg. First simulations are presented, showing the feasibility of the method proposed.

Note: Da es sich um ein Design bzw. Theoriepapier handelt, entfällt die Auswahlneines Experiments. bEmpfangen 17.4., Akzeptiert 17.7. Publiziert 29.7., Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.

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Contributing Institute(s):

1. FS-FLASH (FS-FLASH)
2. Beschleunigerphysik Fachgruppe MPY1 (MPY1)
3. UNI/EXP (Group Leader: Wolfgang Hillert (Rossbach)) (CFEL-ACC)
4. Laser Forschung und Entwicklung (FS-LA)
5. Maschinen Koordination FLASH (MFL)

Research Program(s):

1. 631 - Accelerator R & D (POF3-631) (POF3-631)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2020

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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