National Science Center
Kharkov Institute of Physics and Technology

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Science and Production Establishment
Renewable Energy Sources and
Sustainable Technologies
(SPE RESST)

Optimization of microwave gyrotrons
 Within the framework of the previously developed multimode theory the rigorous calculations were performed on the resonance frequencies and the diffraction Q-factor of operating and parasitic modes in the coaxial 2 MW 170 GHz gyrotron (Fig.1).
Coaxial cavity
Fig. 1 Coaxial cavity
 It is shown that the diffraction Q-factors of competing modes are in the essential dependence on the longitudinal profiles of the outer and inner radiuses of the cavity;
 Recommendations on the selective suppression of the most dangerous modes by the way of coaxial cavity geometry modification were developed;
 It is shown that the experimentally observed sharpening of the mode competition scenario in the coaxial gyrotron cavity is explained by the influence of the upper spatial harmonics.
  2008- SPE RESST
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Design : A.N. Odeychuk      thank to : u com