FLASH at DESY
FLASH2 - FL24

The FL24 beamline is an open port variable micro-focus beamline optimized for the 'water-window' and operable for the full wavelengths range at FLASH2 with its variable-gap undulators.


Acceptance of the full FLASH2 parameter range:

  • Number of Bunches per second          1 – 8000 (delivered up to 5000)
  • Pulse Repetition Rates (within pulse train)  40.50.100.200.250.500.1000 kHz
  • Pulse Duration (FWHM)                     10 – 300 fs (+single spike SASE option)
  • 3rd Harmonic Wavelength                  down to 1.7 nm
  • 3rd Harmonic Pulse Energy                        typically 0.5% of fundamental
  • Wavelength                                        3.5 – 90 nm
  • Photon beam Energy                                  13.7 – 343 eV
  • Average Pulse Energy (single bunch)        0.5 – 500 µJ
  • Average Pulse Energy (pulse trains)            0.5 – 500 µJ

Photon-diagnostics of FLASH2:

  • Gas monitor photon beam energy detection
  • Online photoionization spectrometer [OPIS] for wavelength documentation
Open port focused option FL24a description:
Focusing optical element is a bending mirror system with vertical pre-mirror [KAOS by Fermi@Elettra]
The FLASH2 optical laser will be available con-focal from 2019. 
Open port focused option FL24a parameter:
  • Beam height       1705 mm
  • Focal length         2000 (standard) - 6000 mm [from KAOS horizontal]
  • Actual position       392- 4392 mm from 'open port'
  • Distance to source   90.55 - 115m
  • Focal length with FLASH2 optical laser  2000 - 3000 mm  [from KAOS horizontal]
  • Last beam defining aperture     16 mm in diameter
Open port unfocused option FL24b description:
Open port unfocused option FL24b parameter:
  • Beam height             1600 mm
  • Last beam defining aperture    16 mm in diameter







Photon Source Parameters

FLASH2

FEL mode
SASE, Singel-Spike SASE (Option) Harmonic-Lasing-Self-Seeding (Option), Two-Color (Option)
Photon energy range / wavelength range
3.5 - 90 [nm]
Photon energy / wavelength fluctuations
0 * 10-2 [%, RMS]
Peak Photon energy / central wavelenght
0 [eV]
Fluctuations of the peak photon energy / central wavelenght
000
Spectral Bandwidth FWHM / %
0.25 - 1.9 [nm]
Tunability
0 [%]
Beam shape
Gaussian
Pulse repetition rate
1000 [Hz]
Maximum pulse energy
5 * 10-1 [mJ]
Pulse energy fluctuations %
0 [sigma]
Peak power
0 [W]
Peak fluence on target
0 [J/cm2]
Peak intensity on target
0 [W/cm2]
Pointing stability at the source
0 [mrad]
Pointing stability on target
0 [%]
Macropulse (train) duration
0 [sec]
Macropulse (train) repetition rate
0 [Hz]
Additional Lightsources

FLASH2 optical laser

Laser type
xxx
Beam shape
Gaussian
Optics

KAOS

Angle Of Incidence Of Light On Sample
?
Diagnostics
Wave-front sensor
Support Laboratories

DESY ChemistryLab

Description

xxx

DESY NanoLab

Description

xxx

contacts
Marion Kuhlmann
Techniques
Absorption
  • NEXAFS
  • Time-resolved studies
Diffraction
  • Surface diffraction
  • Time-resolved studies
Emission or Reflection
  • X-ray fluorescence (XRF)
Imaging
  • Photoemission EM
Ion Spectroscopy
  • Ion imaging
  • Mass spectrometry
Lithography
  • EUV litography
Photoelectron emission
  • Photoelectron diffraction
  • Time-resolved studies
Scattering
  • Coherent scattering
  • Elastic scattering
  • Small angle scattering
  • Time-resolved scattering
  • Wide angle scattering
Disciplines
Earth Sciences & Environment
  • Ecosystems & Biodiversity
  • Other - Earth Sciences & Environment
  • Water sciences/Hydrology
Energy
  • Sustainable energy systems
Humanities
  • Arts
Life Sciences & Biotech
  • Other - Life Sciences & Biotech
Material Sciences
  • Knowledge based multifunctional materials
  • Other - Material Sciences
Physics
  • Astronomy/Astrophysics/Astroparticles
  • Atomic & molecular physics
  • High energy & particle physics
Address
DESY-FLASH2 Hall 28k
Notkestr. 85
22607 Hamburg
Germany
control/Data analysis
Control Software Type
  • DOOCS (interfacing possible via MatLab and Python scripts)
Data Output Type
  • HDF5 files and data life stream via MatLab or Pyhton
Data Output Format
  • FLASH specific
Softwares For Data Analysis
  • MatLab, Python