论文信息 - Versatile FEM of high efficiency and high spectral purity

Versatile FEM of high efficiency and high spectral purity

At Tel Aviv University we have developed and are performing research on a unique free electron maser (FEM), utilizing a traveling wave prebuncher which can operate at any frequency in the FEM's frequency band. By e-beam prebunching at or near a desired oscillator eigenfrequency we force the oscillator to operate at that particular eigenfrequency. We can select operation at an eigenfrequency leading to the highest efficiency of operation. The prebunching level and the operating eigenfrequency can be varied. With a high level of prebunching the radiated signal buildup time of the desired frequency is greatly shortened, thus, increasing considerably, the energy conversion efficiency in pulsed operation.

[1] M. Arbel,et al. Performance improvement of FEMs by prebunching of the electron beam , 1997 .

[2] M. Arbel,et al. Visualization and simulation of electron beam transport along a FEL planar wiggler , 1997 .

[3] T. Antonsen,et al. MEASUREMENTS AND SIMULATION OF THE RADIATION BUILD-UP PROCESS IN A PREBUNCHED FREE-ELECTRON MASER OSCILLATOR , 1996 .

[4] Cohen,et al. Masing and single-mode locking in a free-electron maser employing prebunched electron beam. , 1995, Physical review letters.

[5] M. Arbel,et al. A novel free-electron maser as a high power microwave source of sophisticated signals , 1995, Eighteenth Convention of Electrical and Electronics Engineers in Israel.

[6] Antonsen,et al. Mode competition and control in free-electron-laser oscillators. , 1989, Physical review letters.

[7] C. C. Cutler,et al. The nature of power saturation in traveling wave tubes , 1956 .