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Engel R, Düsterer S, Brenner G, et al. Quasi-real-time photon pulse duration measurement by analysis of FEL radiation spectra. J Synchrotron Radiat. 2016;23(1):118-22doi: 10.1107/S1600577515022997.
Engel, R., Düsterer, S., Brenner, G., & Teubner, U. (2016). Quasi-real-time photon pulse duration measurement by analysis of FEL radiation spectra. Journal of synchrotron radiation, 23(1), 118-22. https://doi.org/10.1107/S1600577515022997
Engel, Robin, et al. "Quasi-real-time photon pulse duration measurement by analysis of FEL radiation spectra." Journal of synchrotron radiation vol. 23,1 (2016): 118-22. doi: https://doi.org/10.1107/S1600577515022997
Engel R, Düsterer S, Brenner G, Teubner U. Quasi-real-time photon pulse duration measurement by analysis of FEL radiation spectra. J Synchrotron Radiat. 2016 Jan;23(1):118-22. doi: 10.1107/S1600577515022997. Epub 2016 Jan 01. PMID: 26698053; PMCID: PMC4733933.
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J Synchrotron Radiat. 2016 Jan;23(1):118-22. doi: 10.1107/S1600577515022997. Epub 2016 Jan 01.

Quasi-real-time photon pulse duration measurement by analysis of FEL radiation spectra.

Journal of synchrotron radiation

Robin Engel, Stefan Düsterer, Günter Brenner, Ulrich Teubner

Affiliations

  1. Deutsches Elektronen-Synchrotron, Notkestrasse 85, D-22603 Hamburg, Germany.

PMID: 26698053 PMCID: PMC4733933 DOI: 10.1107/S1600577515022997

Abstract

For photon diagnostics at free-electron lasers (FELs), the determination of the photon pulse duration is an important challenge and a complex task. This is especially true for SASE FELs with strongly fluctuating pulse parameters. However, most techniques require an extensive experimental setup, data acquisition and evaluation time, limiting the usability in all-day operation. In contrast, the presented work uses an existing approach based on the analysis of statistical properties of measured SASE FEL spectra and implements it as a software tool, integrated in FLASH's data acquisition system. This allows the calculation of the average pulse durations from a set of measured spectral distributions with only seconds of delay, whenever high-resolution spectra are recorded.

Keywords: FLASH; SASE; free-electron laser; photon pulse; photon pulse duration; spectral correlation analysis

References

  1. Phys Rev Lett. 2012 Oct 5;109(14):144801 - PubMed

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