About the FEL
Click below to view FEL applications filmed in real-time (avi)
Free-Electron Laser Description
Schematic of the original JLab FEL with its photoinjected, superconducting rf linac with energy recovery.
History
The first FEL, the IR-Demo whose commissioning was completed in August '99, ran as a user facility in Oct. '99, Feb. '00, July '00, Oct. '00, Feb. '01, June '01, Aug. '01, and Oct. '01 providing about 3000 hours of user beam to ~30 groups.
Specifications of the original JLab FEL
| Average Power | 1720 watts |
| Wavelength range | 3-6.2 microns |
| Micropulse energy | up to 70 microJoules |
| Pulse length | 0.5-1.7 ps |
| PRF | 74.85, 37.425, 18.7 MHz |
| Bandwidth | 0.3-2% |
| Amplitude jitter | < 10% p-p |
| Polarization | >6000:1 |
| Transverse mode | < 2x diffraction limit |
| Beam diameter at lab | 1.5-3.5 cm |