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Träfflista för sökning "WFRF:(Sztuk Dambietz Jolanta) "

Sökning: WFRF:(Sztuk Dambietz Jolanta)

  • Resultat 1-3 av 3
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1.
  • Allahgholi, Aschkan, et al. (författare)
  • The Adaptive Gain Integrating Pixel Detector at the European XFEL
  • 2019
  • Ingår i: Journal of Synchrotron Radiation. - 0909-0495 .- 1600-5775. ; 26, s. 74-82
  • Tidskriftsartikel (refereegranskat)abstract
    • The Adaptive Gain Integrating Pixel Detector (AGIPD) is an X-ray imager, custom designed for the European X-ray Free-Electron Laser (XFEL). It is a fast, low-noise integrating detector, with an adaptive gain amplifier per pixel. This has an equivalent noise of less than 1keV when detecting single photons and, when switched into another gain state, a dynamic range of more than 10(4)photons of 12keV. In burst mode the system is able to store 352 images while running at up to 6.5MHz, which is compatible with the 4.5MHz frame rate at the European XFEL. The AGIPD system was installed and commissioned in August 2017, and successfully used for the first experiments at the Single Particles, Clusters and Biomolecules (SPB) experimental station at the European XFEL since September 2017. This paper describes the principal components and performance parameters of the system.
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2.
  • Sobolev, Egor, et al. (författare)
  • Megahertz single-particle imaging at the European XFEL
  • 2020
  • Ingår i: Communications Physics. - : Springer Science and Business Media LLC. - 2399-3650. ; 3:1
  • Tidskriftsartikel (refereegranskat)abstract
    • The emergence of high repetition-rate X-ray free-electron lasers (XFELs) powered by superconducting accelerator technology enables the measurement of significantly more experimental data per day than was previously possible. The European XFEL is expected to provide 27,000 pulses per second, over two orders of magnitude more than any other XFEL. The increased pulse rate is a key enabling factor for single-particle X-ray diffractive imaging, which relies on averaging the weak diffraction signal from single biological particles. Taking full advantage of this new capability requires that all experimental steps, from sample preparation and delivery to the acquisition of diffraction patterns, are compatible with the increased pulse repetition rate. Here, we show that single-particle imaging can be performed using X-ray pulses at megahertz repetition rates. The results obtained pave the way towards exploiting high repetition-rate X-ray free-electron lasers for single-particle imaging at their full repetition rate.
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3.
  • Yefanov, Oleksandr, et al. (författare)
  • Evaluation of serial crystallographic structure determination within megahertz pulse trains
  • 2019
  • Ingår i: Structural Dynamics. - : AMER INST PHYSICS. - 2329-7778. ; 6:6
  • Tidskriftsartikel (refereegranskat)abstract
    • The new European X-ray Free-Electron Laser (European XFEL) is the first X-ray free-electron laser capable of delivering intense X-ray pulses with a megahertz interpulse spacing in a wavelength range suitable for atomic resolution structure determination. An outstanding but crucial question is whether the use of a pulse repetition rate nearly four orders of magnitude higher than previously possible results in unwanted structural changes due to either radiation damage or systematic effects on data quality. Here, separate structures from the first and subsequent pulses in the European XFEL pulse train were determined, showing that there is essentially no difference between structures determined from different pulses under currently available operating conditions at the European XFEL.
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  • Resultat 1-3 av 3

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