Influence of electron beam on transverse structure of gyrotron radiation

G. S. Nusinovich

doi:10.1117/12.2298364

14 December 1992 Influence of electron beam on transverse structure of gyrotron radiation

G. S. Nusinovich

Proceedings Volume 1929, 17th International Conference on Infrared and Millimeter Waves; 19296V (1992) https://doi.org/10.1117/12.2298364
Event: 17th International Conference on Infrared and Millimeter Waves, 1992, Pasadena, CA, United States

Abstract

It is known that, in principle, an electron beam disturbs a spatial structure of the res- onator RF field. This effect is negligibly small when the resonator Q-factor is large enough and it becomes important as Q diminishes. In conventional gyrotrons the resonators are opened in an axial direction. Therefore, if such resonators are long enough and their diameter is relatively small, the electron beam first starts to affect the axial structure of the RF field that has been studied elsewhere [1,2]. In short resonators with a large diameter the influence of the electron beam on the transverse structure of the RF field may also be important. This effect is considered below. Consider a cylindrical resonator in which a thin annular electron beam is placed. Suppose that due to the effect of an electron beam the fields inside the beam (region 1) are different from those outside (region 2). In the vicinity of the beam these fields satisfy the boundary conditions , ,

Citation Download Citation

G. S. Nusinovich "Influence of electron beam on transverse structure of gyrotron radiation", Proc. SPIE 1929, 17th International Conference on Infrared and Millimeter Waves, 19296V (14 December 1992); https://doi.org/10.1117/12.2298364

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