Journal Article

PUBDB-2021-01418

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Study of temporal, spectral, arrival time and energy fluctuations of SASE FEL pulsesb

Bermudez Macias, I. J.DESY* ; Duesterer, S. (Corresponding author)XFEL.EU*DESY* ; Ivanov, R.DESY* ; Liu, J.XFEL.EU* ; Brenner, G.DESY* ; Rönsch-Schulenburg, J.DESY* ; Czwalinna, M. K.DESY* ; Yurkov, M. V.XFEL.EU*DESY*

2021
Soc. Washington, DC

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Please use a persistent id in citations: doi:10.1364/OE.419977  doi:10.3204/PUBDB-2021-01418

Abstract: Self-amplified spontaneous emission (SASE) pulses delivered by free electron lasers (FELs) are inherently fluctuating sources; each pulse varies in energy, duration, arrival time and spectral shape. Therefore, there is strong demand for a full characterization of the properties of SASE radiation, which will facilitate more precise interpretation of the experimental data taken at SASE FELs. In this paper, we present an investigation into the fluctuations of pulse duration, spectral distribution, arrival time and pulse energy of SASE XUV pulses at FLASH, both on a shot-to-shot basis and on average over many pulses. With the aid of simulations, we derived scaling laws for these parameters and disentangled the statistical SASE fluctuations from accelerator-based fluctuations and measurement uncertainties.

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Contributing Institute(s):

1. FLASH Photonen-Diagnose und Steuerungen (FS-FLASH-D)
2. FLASH Photonen-Strahlführungen und Optiken (FS-FLASH-B)
3. Maschinen Koordination FLASH (MFL)
4. Beschleunigerphysik (MPY)
5. Strahlkontrollen (MSK)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. 6G2 - FLASH (DESY) (POF4-6G2) (POF4-6G2)

Experiment(s):

1. FLASH2 Beamline FL21 (FLASH2)
2. Facility (machine) FLASH2

Appears in the scientific report 2021

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