Cathode-adjustable double anode magnetron gun

Abstract

The present invention provides a cathode-adjustable double anode magnetron gun, and belongs to a double anode magnetron electron gun matched with a vacuum gyrotron. The cathode-adjustable double anodemagnetron gun comprises an electron gun shell and a base, an electric heating wire sleeve comprising an electric heating wire, a ring-shaped scale segment, a threaded section and a guiding plane, anelectric heating wire module filled with insulation fillers, an electric heating wire module fixed at a support sleeve with a sliding location sleeve in the electron gun shell, an adjustment mechanismassembly including adjustment nuts and located between the electric heating wire sleeve and the support sleeve, an electron gun cathode, a fixed ring plate, a first anode, a fixed ring and a second anode. The cathode-adjustable double anode magnetron gun can adjust the distance between the cathode and the anode according to working conditions, the transverse and longitudinal speed ratio of the electron beam is larger than 1.0, the vertical speed dispersion is smaller than 1.5%, the influences caused by assembling errors and too-heat deformation or greatly changed current and voltage of the traditional electron gun are overcome, and the cathode-adjustable double anode magnetron gun can be suitable for working currents and voltages in a larger range, is low in speed dispersion and good in performances of the electron beam and improves the following gyrotron beam wave interaction power and efficiency.

Description

technical field [0001] The invention belongs to the double-anode magnetron electron gun in the technical field of high-power microwave, millimeter wave and submillimeter wave, in particular to a cathode-adjustable double-anode magnetron electron gun matched with a vacuum gyrotron. Background technique [0002] The gyrotron was made by the scientists of the former Soviet Union in the 1960s by using the mechanism of electron cyclotron resonance stimulated radiation. The excellent performance shown has greatly promoted the application of millimeter wave and submillimeter wave in the fields of radar and guidance system, electronic warfare, millimeter wave communication, high power microwave system, controlled thermonuclear fusion, etc. It has attracted the attention of countries all over the world, and has successively carried out theoretical and applied research on gyrotrons. The gyrotron is a device that converts the direct current energy carried by electrons into microwave e...

AI Technical Summary

Problems solved by technology

The patent number is 200810114538.X, and the name of the invention is "Method for Suppressing Oscillation in Double-anode Magnetron Injection Gun Area of ​​Gyrotron Amplifier", which belongs to this type of double-anode magnetron electron gun. The cathode of this type of electron gun is welded with the electron gun through its supporting cylinder Therefore, once the relative position of the cathode and anode of the electron gun deviates during the manufacturing and assembly process of the electron gun, it cannot be adjusted, and the heat caused by the uneven heating of each part during the working process Deformation or changes in the relative position of cathode and anode due to excessive changes in operating current and voltage will lead to changes in the electric field on the surface of the cathode, increase the dispersion of the initial electron velocity when the electron gun is working, and reduce the efficiency of the injection wave interaction of the gyrotron tube. happened

Therefore, this type of electron gun has defects such as large scattered velocity, it is difficult to meet the requirement that the velocity dispersion is less than 3% in use, and the injection wave interaction efficiency of the gyrotron is low.

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