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BibTeX file of [Toyota17a] [show it without abstract]

@conference{Toyota17a,
    author={Koudai Toyota and Zoltan Jurek and Sang-Kil Son and Robin Santra},
    title={Calibration of the fluence of an x-ray free-electron laser using {XATOM}},
    year={2017},
    month={March 6-10},
    booktitle={DPG Spring Meeting of the Section AMOP},
    organization={German Physical Society},
    address={Mainz, Germany},
    keywords={XATOM; XFEL; CFEL; DESY;},
    url={http://www.dpg-verhandlungen.de/year/2017/conference/mainz/part/a/session/3/contribution/4},
    abstract={We report on a numerical procedure to calibrate the spatial intensity profile of x-ray free-electron laser pulses (XFELs). Extracting the reliable pulse parameters is indispensable to quantitatively analyze the experimental results and eventually to understand the non-linear physics in matter induced by high intensity XFELs. So far, we have conducted calibrations based on charge state distributions (CSDs) of atomic ions [1] calculated by XATOM toolkit [2]. Such a method has the advantage that the calibration is based on observables directly reflecting the experimental conditions within the interaction volume. By convolving theoretical CSDs with a spatial fluence distribution of a double Gaussian shape profile, which is defined by a few parameters, the experimental CSD was successfully recovered. However, our previous analysis was lacking a comprehensive framework and was manually implemented.
    
    Our new procedure is now built with a well established optimization techniques in numerical analysis and fully automatized via computer codes. Therefore it offers a possibility of deeper investigations based on CSDs over a wide range of a parameter space. We discuss the procedure of optimization algorithms and test different pulse profile ansatz. We demonstrate the workflow and its practical importance on real experimental data.
    
    [1] B.F. Murphy et al., Nat. Commun. 5, 4281 (2014);
    [2] S.-K. Son and R. Santra, XATOM - an integrated toolkit for x-ray and atomic physics, CFEL, DESY, Hamburg, Germany, 2011.} }

Koudai Toyota, Zoltan Jurek, Sang-Kil Son, and Robin Santra, Calibration of the fluence of an x-ray free-electron laser using XATOM in DPG Spring Meeting of the Section AMOP (German Physical Society, Mainz, Germany, March 6-10, 2017) [abstract][abstract][link][link]


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