Author: Rivas, D.E.
Paper Title Page
THXB02 Beam Arrival Stability at the European XFEL 3714
 
  • M.K. Czwalinna, J. Kral, B. Lautenschlager, J. Müller, H. Schlarb, S. Schulz, B. Steffen
    DESY, Hamburg, Germany
  • R. Boll, H. Kirkwood, J. Koliyadu, R. Letrun, J. Liu, F. Pallas, D.E. Rivas, T. Sato
    EuXFEL, Schenefeld, Germany
 
  Free electron laser facilities, such as the European XFEL, make increasingly high demands on the longterm temporal stability and uniformity of the electron bunches, as pump-probe experiments meanwhile aim for timing stabilities of few femtoseconds residual jitter only. For a beam-based feedback control of the linear accelerator, electro-optical bunch arrival-time monitors are deployed, achieving a time resolution better than 3 fs. In a first attempt, we recently demonstrated a beam-based feedback system, reducing the arrival time jitter of the electron bunches to the 10 fs level with stable operation over hours. For pump-probe experiments it is crucial to equally verify this new level of precision in the FEL pulse arrival time with independent methods. In this work, we are discussing first results from examining the facility-wide temporal stability at the European XFEL, with attention to the contributions of various sub-systems and on the different time scales.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THXB02  
About • paper received ※ 19 May 2021       paper accepted ※ 20 July 2021       issue date ※ 23 August 2021  
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