METHOD OF FORMING BUNCHES OF HIGH ENERGY DENSITY IN AN ELECTRON BEAM AND A TRANSIT KLYSTRON Russian patent published in 2021 - IPC H01J25/10 

FIELD: electronic microwave technology.

SUBSTANCE: invention relates to the field of electronic microwave technology, in particular to flying klystrons used to amplify powerful electromagnetic fields in radar, communications, medicine, etc. Disclosed is a method of forming bunches of high energy density in an electron bunch formed by an electron source in which bunches are formed which are subject to final grouping before they leave a number of microwave fields. The method can be used in a transit klystron by stepwise modulation of the velocity and distribution density of electrons in the electron stream, in the nuclei of electron bunches by acting on the electron flow of rows of microwave fields. In this case, the rows of microwave fields are sequentially located in the direction of the flow and are separated by drift spaces. The electron bunch is passed through a cascade of microwave fields containing at least two multi-resonator stages, which provide sequentially: the formation of a bunch nucleus, an increase in the density of the bunch nucleus, ungrouping of the bunch nucleus and the final bunching of the bunch. In this case, the first multi-cavity stage consists of three resonators, which provide oscillation of the bunch core using microwave fields, including the ungrouping field of one of the resonators. The second multi-cavity stage provides oscillation of the bunch nucleus using its own space charge.

EFFECT: invention helps to achieve high current density in the bunch aimed at braking to convert its energy into microwave energy consumption. The invention reduces the energy consumption at a fixed output microwave power of the klystron and increases the efficiency of flying klystrons.

6 cl, 5 dwg