Specifications

Here is a concise summary of the beam parameters available at MagneDyn

Properties
Photon energy range 62 - 310 eV (20 - 4 nm) FEL-2 fundamental
40 - 62 eV (30 - 20 nm) FEL-2 first stage only
300 - 830 eV (1.5 - 4 nm) FEL-2 harmonics (low intensities and not standard)
polarization  CR, CL, LH, LV
FEL pulse duration 50-70 fs (standard)
typical pulse intensity

4 μJ at 50 eV linear H,

10 μJ at 50 eV circular,

15 μJ at 60 eV,

10 μJ at 100 eV,

3 μJ at 300 eV.
energy density range 0.1 -320 mJ/cm2
focus size  down to 20Hx20V μm2


 
beamline transmission

 

FEL2 beam parameters as a function of the LINAC energy, light polarization and wavelength can be found here: FEL2 parameters

An indication of the FEL performance at sample position, i.e., after photon-beam transport, can be obtained by taking into account a beamline transmission of about 70% in the spectral range 20-10 nm, a transmission of about 20-70% in the range 10-6 nm, a transmission of about 20-40% in the range  6-5 nm, and a transmission of about 10-25% in the range  5-4 nm. Moreover, filters are required to remove unwanted radiation (due to seed laser, FEL harmonics, etc.). Typical filter transmissions are shown here.
 
Ultima modifica il Venerdì, 26 Aprile 2024 10:25
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