Electrostatic effects on the quality of gyrotron beams

J. L. Vomvoridis

doi:10.1117/12.2298666

30 August 1993 Electrostatic effects on the quality of gyrotron beams

J. L. Vomvoridis

Proceedings Volume 2104, 18th International Conference on Infrared and Millimeter Waves; 21046I (1993) https://doi.org/10.1117/12.2298666
Event: 18th International Conference on Infrared and Millimeter Waves, 1993, Colchester, United Kingdom

Abstract

An explanation for the discrepency between the calculated and the measured performance ofgyrotrons lies in the possible development of electrostatic waves in the electron beam before itenters the gyrotron cavity. From our research, aiming at assessing this possibility and proposingremedial action, we report here our results on the case of Langmuir waves, which may develop bytheir coupling to slow TM modes supported by the beam channel. Both the cases of quasi- uniform and of nonuniform guide magnetostatic field have been addressed analytically. Inaddition, computer simulations have been prepared, in which the trajectories of fast electrons arefollowed in the fields of slow TM waves in the beam channel. The results, which are in goodagreement with the analytical ones, are not reported here, due to space limitations.

Citation Download Citation

J. L. Vomvoridis "Electrostatic effects on the quality of gyrotron beams", Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21046I (30 August 1993); https://doi.org/10.1117/12.2298666

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