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Sökning: WFRF:(Vilcins S.)

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1.
  • Faatz, B., et al. (författare)
  • Simultaneous operation of two soft x-ray free-electron lasers driven by one linear accelerator
  • 2016
  • Ingår i: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 18
  • Tidskriftsartikel (refereegranskat)abstract
    • Extreme-ultraviolet to x-ray free-electron lasers (FELs) in operation for scientific applications are up to now single-user facilities. While most FELs generate around 100 photon pulses per second, FLASH at DESY can deliver almost two orders of magnitude more pulses in this time span due to its superconducting accelerator technology. This makes the facility a prime candidate to realize the next step in FELs-dividing the electron pulse trains into several FEL lines and delivering photon pulses to several users at the same time. Hence, FLASH has been extended with a second undulator line and self-amplified spontaneous emission (SASE) is demonstrated in both FELs simultaneously. FLASH can now deliver MHz pulse trains to two user experiments in parallel with individually selected photon beam characteristics. First results of the capabilities of this extension are shown with emphasis on independent variation of wavelength, repetition rate, and photon pulse length.
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2.
  • Shea, T. J., et al. (författare)
  • Overview and status of diagnostics for the ESS project
  • 2018
  • Ingår i: Proceedings of the 6th International Beam Instrumentation Conference, IBIC 2017. - 9783954501922 ; , s. 8-15
  • Konferensbidrag (refereegranskat)abstract
    • The European Spallation Source, now under construction in Lund, Sweden, aims to be the world's most powerful pulsed neutron scattering facility. Driving the neutron source is a 5 MW superconducting proton linear accelerator operating at 4 percent beam duty factor and 14 Hz repetition rate. Nineteen partner institutions from across Europe are working with the Accelerator Division in Lund to design and construct the accelerator. The suite of accelerator instrumentation consists of over 20 unique system types developed by over 20 partners and collaborators. Although the organizational complexity presents challenges, it also provides the vast capabilities required to achieve the technical goals. At this time, the beam instrumentation team is in transition, completing the design phase while scaling up to the deployment phase. Commissioning of the ion source has commenced in Catania, preparations for installation on the Lund site are ramping up, and basic R&D on target instrumentation continues. Beam commissioning results from the systems immediately following the ion source will be presented, along with technical highlights and status of the many remaining instrumentation systems.
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