Standard photon beam energy (shaped by electron beam restrictions, settings of the machine, and photon beam transport).
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 – 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 is available quasi confocal and directly. (Optical laser systems)
(http://photon-science.desy.de/facilities/flash/beamlines/optical_laser_systems/index_eng.html)
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'
• Focus distance to source 90.55 - 115 m
• Focal spot size (min at 2m) <10µm [full range]
• 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 parameter:
• Beam height 1600 mm
• Last beam defining aperture 16 mm in diameter
CONTACT:
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