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Space traveling wave tube working state electron beam motion state analysis method

An analysis method and technology of motion state, applied in the field of vacuum electronics, can solve problems such as the motion state of electron beams that have not yet been seen

Active Publication Date: 2020-10-16
SOUTHEAST UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

In the literature that has been reported to improve the efficiency of S-TWT, there is no analysis of the influence of the electron beam motion state and its velocity distribution on the efficiency.

Method used

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  • Space traveling wave tube working state electron beam motion state analysis method
  • Space traveling wave tube working state electron beam motion state analysis method
  • Space traveling wave tube working state electron beam motion state analysis method

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Embodiment Construction

[0033] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] The present invention designs a method for analyzing the motion state of the electron beam in the working state of the space traveling wave tube, such as figure 1 As shown, the specific process is as follows.

[0035] 1. Use the finite element method to analyze the S-TWT injection-wave interaction, and set up a group of two-dimensional monitors uniformly arranged along the helical slow-wave structure to record the electron injection section macroelectron (a collection of a large number of electrons. In order to facilitate computer processing , the motion state of a large number of electrons is usually regarded as the same, which is abstracted as the position vector and velocity vector of macro electrons).

[0036] 2. Establish a fan-shaped thin disk model to analyze the shape of the electron beam. The cross-section of the electron ...

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Abstract

The invention discloses a space traveling wave tube working state electron beam motion state analysis method. On the basis of electron motion data obtained by a finite element method, a fan-shaped thin disc model for electron beam morphological analysis and a fan-shaped ring thin disc model for electron beam velocity analysis are provided to obtain changes of electron beam morphology and velocityalong a slow wave structure of a space traveling wave tube spiral line. According to the method, the problems that the morphology of the electron beam cannot be accurately quantified and the radial velocity change and the section velocity distribution of the electron beam cannot be analyzed in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of vacuum electronics, and in particular relates to a method for analyzing the motion state of electron beams in the working state of a space traveling wave tube. Background technique [0002] The space traveling wave tube (S-TWT) is a key component of the satellite communication system launch assembly. Due to working in the space environment, the volume and weight of launch components are greatly limited, so S-TWT needs to have high efficiency, long life, high reliability and miniaturization and other performance and characteristics. Improving S-TWT efficiency is one of the core technologies to ensure the quality of satellite communication systems. The power amplification effect of S-TWT comes from the beam interaction between the electron beam in the tube and the high-frequency signal. The energy delivered by the electrons to the high-frequency signal in the deceleration field determines the amplification...

Claims

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Application Information

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IPC IPC(8): G01R31/25G06F30/23
CPCG01R31/25G06F30/23
Inventor 孙小菡汪锦言沈长圣
Owner SOUTHEAST UNIV
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