Fritz-Haber-Institut der Max-Planck-Gesellschaft
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The FHI FEL
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- Gas phase ions
- Metal clusters
- Gas phase biomolecules
- Solid state lattice dynamics
- Surface spectroscopy
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The following posters describing details and specifications of the FHI FEL have been presented at conferences:
- 2013: Control System Overview, presented at the 14th International ICALEPCS Conference
- 2013: System Overview, presented at the 35th International Free-Electron Laser Conference
- 2013: Control System Integration, presented at the 35th International Free-Electron Laser Conference
- 2011: Poster, presented at the 2nd International Particle Accelerator Conference
The electron beamline:
Electron pulses are accelerated in two normal conducting linear accelerators. The beamline was designed and constructed by Advanced Energy Systems, Inc.
| Parameter | Unit | Target | |
|---|---|---|---|
| Electron energy | MeV | 15-50 | |
| Energy spread | keV | <50 | |
| Charge per pulse | pC | >200 | |
| Micropulse length | psec | 1-10 | |
| Micropulse repetition rate | GHz | 1 | |
| Macropulse length | µs | 1-15 | |
| Macropulse repetition rate | Hz | 20 | |
The undulator:
The undulator is is a permanent magnet, wedged pole undulator with a variable gap from STI Optronics.
| Type | Planar hybrid | |
|---|---|---|
| Material | NdFeB | |
| Period (mm) | 40 | |
| Length (m) | 2 | |
| Krms | 0.5 - 1.6 | |
The emitted light:
Macro-pulse energies for narrow bandwidth conditions (< 1% relative full width at half maximum) at various electron energies
The data plotted as a function of the wavelength (logarithmic scale):
The data plotted as a function of the wavelength (linear scale):
