| Paper |
Title |
Page |
| MOPPH037 |
Characterization of a New High-Q Talbot Effect Confocal Resonator for mm-Wave FEL
|
|
| |
- J. Dadoun, Kh. Garb, A. Gover, O. Faingersh
University of Tel-Aviv, Faculty of Engineering, Tel-Aviv
- B. Yu. Kapilevich, B. Litvak
CJS, Ariel
|
|
| |
A new FEL resonator for mm- wave range was assembled and characterized before installation into the high voltage terminal of the Tandem electrostatic FEL accelerator. The measured unloaded Q-factor of the new resonator is Q=30,000. Accordingly, the round-trip losses are ~18% for the total length of the resonator about 1.5m The reflector of the new resonator utilizes in one transverse dimension the Talbot effect for imaging and splitting the radiation mode field for the purpose of the laser radiation. In the other transverse dimension optical imaging is realized by means of two confocal mirrors. A 3-wire grid assembly, remotely controlled, provides fine tuning of the laser frequency and control over the resonator out-coupling coefficient. The new resonator includes an integral e-beam profile diagnostics means installed on the safety shield. All e-beam diagnostics and tuning motors are remote controlled in a Lab View environment.
|
|