A high-order mode coaxial output cavity with microwave extraction on the inside and electron collection on the outside

Abstract

The invention belongs to the field of high-power microwave technology, and discloses a high-order mode coaxial output cavity with inner microwave extraction and outer electron collection type, including outer conductor 401, inner conductor 402, drift tube 403, reflector 404, extraction cavity-gap 405, extraction cavity Cavity 2 gap 406, collector outer cylinder 407, electron beam collector 408, output waveguide inner conductor 409, output waveguide 410 and output port adjustment block 411, the overall structure is rotationally symmetrical about the central axis. The invention arranges the electron beam collector on the outside where the external cooling liquid is easy to be introduced, and utilizes the obliquely incident electron beam to reduce the energy deposition density on the surface of the collector, effectively alleviating the problem that the existing coaxial output cavity is extremely easy to ablate; At the same time, the invention utilizes the high-order mode extraction cavity to widen the radial width of the output slit, effectively solving the problem that the output slit of the existing coaxial extraction structure is easily broken down. The invention has important reference significance for the structural design of the coaxial output cavity required by the long pulse and high repetition frequency coaxial HPM source.

Description

technical field [0001] The invention relates to a microwave coaxial output cavity in the technical field of high-power microwaves, in particular to a high-order mode coaxial output cavity with inner microwave extraction and outer electron collection type. Background technique [0002] High Power Microwave (HPM) usually refers to electromagnetic waves with a peak power greater than 100 MW and a frequency between 1 and 300 GHz. The high-power microwave source is the core component of the high-power microwave system. It converts the kinetic energy of the high-current relativistic electron beam into microwave energy through a specially designed high-frequency electromagnetic structure inside the device, and then generates directional high-power microwave radiation through the transmitting antenna. The pursuit of higher power, higher frequency, and higher efficiency microwave output is an important development goal in the field of HPM technology. [0003] Traditional HPM sources...

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a high-order mode coaxial output cavity with inner microwave extraction and outer electron collection type, which solves the existing TM on the basis of keeping the output cavity resonance frequency, Q value and other characteristic parameters basically unchanged. 01 The output slit of the mold output cavity is easy to break down and the collection is easy to be ablated, which lays a technical foundation for the coaxial HPM source to achieve high-power, high-repetition-frequency microwave output in the high-frequency band

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