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Free-Electron LASer in Hamburg

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FLASHbrilliance
 

  

FLASHcallforproposals
 

The call for proposals for FLASH is published twice a year. The deadline is regularly on 1 April and 1 October of each year.


At present proposal submission for FLASH is closed.

 

 

FLASHBeamlines

browse by techniques
  • Photoelectron emission

    Free-Electron LASer in Hamburg beamlines for Photoelectron emission

    • PG2
      • XPS
      • UPS
      • Angular Resolved PES
      • Photoelectron diffraction
      • Time-resolved studies
    • BL1 - CAMP
      • XPS
      • UPS
      • Angular Resolved PES
      • Photoelectron diffraction
      • Time-resolved studies
    • BL2
      • XPS
      • UPS
      • Angular Resolved PES
      • Photoelectron diffraction
      • Time-resolved studies
    • BL3
      • XPS
      • UPS
      • Angular Resolved PES
      • Photoelectron diffraction
      • Time-resolved studies
  • Imaging

    Free-Electron LASer in Hamburg beamlines for Imaging

    • PG2
      • X-ray holography
      • Fluorescence imaging
    • BL2
      • IR Microscopy
      • X-ray holography
      • Fluorescence imaging
    • BL3
      • IR Microscopy
      • X-ray holography
  • Scattering

    Free-Electron LASer in Hamburg beamlines for Scattering

    • PG1
      • Inelastic scattering
    • PG2
      • Elastic scattering
      • Coherent scattering
      • Inelastic scattering
      • Magnetic scattering
      • Small angle scattering
      • Time-resolved scattering
    • BL1 - CAMP
      • Elastic scattering
      • Coherent scattering
      • Small angle scattering
      • Wide angle scattering
      • Time-resolved scattering
    • BL2
      • Elastic scattering
      • Coherent scattering
      • Inelastic scattering
      • Magnetic scattering
      • Small angle scattering
      • Time-resolved scattering
    • BL3
      • Elastic scattering
      • Coherent scattering
      • Inelastic scattering
      • Magnetic scattering
      • Small angle scattering
      • Time-resolved scattering
  • Emission or Reflection

    Free-Electron LASer in Hamburg beamlines for Emission or Reflection

    • PG2
      • Time-resolved studies
    • BL1 - CAMP
      • X-ray fluorescence (XRF)
      • Time-resolved studies
    • BL2
      • Time-resolved studies
    • BL3
      • Time-resolved studies
  • Absorption

    Free-Electron LASer in Hamburg beamlines for Absorption

    • PG2
      • Time-resolved studies
    • BL2
      • Time-resolved studies
    • BL3
      • XMCD
      • Time-resolved studies
  • Diffraction

    Free-Electron LASer in Hamburg beamlines for Diffraction

    • PG2
      • Time-resolved studies
    • BL2
      • Time-resolved studies
    • BL3
      • Time-resolved studies
  • Lithography

    Free-Electron LASer in Hamburg beamlines for Lithography

    • BL2
      • EUV litography
  • Ion Spectroscopy

    Free-Electron LASer in Hamburg beamlines for Ion Spectroscopy

FLASH was the first free-electron laser for VUV and soft X-ray radiation (XUV) and started user operation in summer 2005. Currently it covers a wavelength range down to 4.1 nm with GW peak power and pulse durations between 50 fs and 200 fs. FLASH (formerly known as 'VUV-FEL') stands for Free-Electron LASer in Hamburg."

Approximately 20 weeks of beamtime are provided for scientific experiments per year which are not possible on any other radiation source. It is operated in the "self-amplified spontaneous emission" (SASE) mode. Five beamlines are operational.

In the past years, an additional FEL undulator line in a separate tunnel - FLASH2-  and the new 'Kai Siegbahn' experimental hall have been built adjacent to the existing FLASH facility now called FLASH1. First lasing of FLASH2 was achieved in August 2014 in parallel to FLASH1. Now, the FLASH facility at DESY comprises two separate and almost independent FEL sources. This upgrade enhances significantly the capacities for VUV and soft X-ray FEL users at DESY. Up to 6 beamlines (called FL beamlines) will be set up in the 'Kai Siegbahn' hall, FL24 and FL26 have started operation in spring 2016.

FL24 has an open port for user supplied endstations. FL24 covers the entire wavelength range of FLASH2. It will offer a KB bending mirror system from spring 2017 and, starting in 2018, a split-and-delay unit for XUV-XUV pump-probe experiments.

FL26 features the permanent end station REMI - a reaction microscope from R. Moshammer's group at MPIK Heidelberg.

Photon beam parametersFLASH
Photon energy [eV]25-300
Tunability [%]3
PolarisationLinear (hor)
Estimated pulse lenght [fs]50-200
Repetition rate [Hz]10 (8000 with bunch trains)
FEL mode(SASE)
FWHM [meV]250-3000
Photon energy fluctuations [rms]˜0.1%
FEL bandwidth DE/E [rms]˜0.5%
FEL bandwidth fluctuations [rms]-
 
last update by DESY on 11/9/2017 9:44:40 AM

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