Journal Article

PUBDB-2023-06744

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A sensitive high repetition rate arrival time monitor for X-ray free electron lasers

Diez, M. (Corresponding author)XFEL.EU* ; Kirchberg, H. ; Galler, A. (Corresponding author)XFEL.EU* ; Schulz, S.XFEL.EU*DESY* ; Biednov, M.CFEL*XFEL.EU* ; Bömer, C.XFEL.EU*DESY* ; Choi, T.-K.XFEL.EU* ; Rodriguez-Fernandez, A.XFEL.EU* ; Gawelda, W.XFEL.EU* ; Khakhulin, D.XFEL.EU* ; Kubicek, K.XFEL.EU* ; Lima, F. ; Otte, F.Extern*XFEL.EU* ; Zalden, P.XFEL.EU* ; Coffee, R.Extern*XFEL.EU* ; Thorwart, M.Extern* ; Bressler, C. (Corresponding author)XFEL.EU*

2023
Nature Publishing Group UK [London]

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Please use a persistent id in citations: doi:10.1038/s41467-023-38143-y  doi:10.3204/PUBDB-2023-06744

Abstract: X-ray free-electron laser sources enable time-resolved X-ray studies with unmatched temporal resolution. To fully exploit ultrashort X-ray pulses, timing tools are essential. However, new high repetition rate X-ray facilities present challenges for currently used timing tool schemes. Here we address this issue by demonstrating a sensitive timing tool scheme to enhance experimental time resolution in pump-probe experiments at very high pulse repetition rates. Our method employs a self-referenced detection scheme using a time-sheared chirped optical pulse traversing an X-ray stimulated diamond plate. By formulating an effective medium theory, we confirm subtle refractive index changes, induced by sub-milli-Joule intense X-ray pulses, that are measured in our experiment. The system utilizes a Common-Path-Interferometer to detect X-ray-induced phase shifts of the optical probe pulse transmitted through the diamond sample. Owing to the thermal stability of diamond, our approach is well-suited for MHz pulse repetition rates in superconducting linear accelerator-based free-electron lasers.

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Contributing Institute(s):

1. FS-Photon Science (FS-PS)
2. X-ray Operations (XFEL_DO_XO)
3. FXE (XFEL_E1_FXE)
4. MID (XFEL_E1_MID)
5. UNI/INF (CFEL-AO)
6. Academic Liaison Officer (XFEL_SF_ALO)
7. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)
3. DFG project 194651731 - EXC 1074: Hamburger Zentrum für ultraschnelle Beobachtung (CUI): Struktur, Dynamik und Kontrolle von Materie auf atomarer Skala (194651731) (194651731)

Experiment(s):

1. XFEL Beamline SASE 1 (XFEL)

Appears in the scientific report 2023

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