Specifications of the FHI FEL
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:
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 ondulator 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 (linear scale):

The data plotted as a function of the wavelength (logarithmic scale):