An attenuation modes for cavities of gyrotrons

RESPECT THE INVENTION SOURCES OF ENERGY MICROWAVE. IN A TUBE ELECTRONIC TYPE WITH A gyrotron CAVITE 40 ENABLING THE EXISTENCE OF ELECTROMAGNETIC FIELD MODE WITH CIRCULAR ELECTRIC PARASITES OF rESONANCES MAY APPEAR IN OPTIONS WITH ELECTRIC FIELD CIRCULAR NO. ON amortizes these RESONANCES PESTS AND ON THEIR FREQUENCY OFFSET BY A CIRCULAR SLOT 50 FORMED IN THE WALL CAVITY IN PARALLEL ELECTRIC FIELD. APPLICATION TO MICROWAVE GENERATORS VERY HIGH POWER.