A Design Method for Periodic Permanent Magnet Focusing System of Traveling Wave Tube
A periodical permanent magnet focusing and design method technology, applied in design optimization/simulation, geometric CAD, special data processing applications, etc., can solve problems such as low efficiency of design methods, reduce time cost and labor cost, and improve design efficiency Effect
Active Publication Date: 2022-03-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0006] In view of the above existing problems or deficiencies, in order to solve the problem of relatively low efficiency of the existing traveling wave tube periodic permanent magnet focusing system design method, the purpose of the present invention is to provide a traveling wave tube periodic permanent magnet focusing system design method
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[0028] Taking the traveling wave tube electron gun 1 and the traveling wave tube electron gun 2 as examples below, the technical solution of the present invention will be described in detail in combination with the results of the accompanying drawings. The electron gun simulation results are calculated by using the electron optics module EOS in the microwave tube simulation software suite MTSS developed by the University of Electronic Science and Technology of China.
[0029] A design method for a traveling wave tube periodic permanent magnet focusing system includes the following steps:
[0030] (1) Obtain the relevant parameters according to the designed structure of the target traveling wave tube, calculate the position of the first peak of the sinusoidal periodic magnetic field, simulate without adding a magnetic field, and check the electronic injection pattern at this position envelope curves, such as Figure 4 In the electron gun 1 shown, although the first peak positi...
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The invention belongs to the technical field of microwave vacuum electronics, and in particular relates to a design method of a traveling wave tube periodic permanent magnet focusing system. The present invention aims at the problem that the simulated magnetic field and the actual magnetic field in the design of the traveling wave tube electron gun and the magnetic system are different from the simulation results of the electron gun due to the difference in the initial 1 / 4 period, and proposes a design method for the periodic permanent magnet focusing system of the traveling wave tube; By reasonably setting the peak ratio of the half-period magnetic field, the invention makes the simulated magnetic field distribution consistent with the electron gun simulation mold of the actual magnetic field distribution, which effectively reduces the time and labor costs of the traveling wave tube electron gun and magnetic system design, and greatly improves Design efficiency of traveling wave tube electron gun and periodic permanent magnet focusing system.
Description
technical field [0001] The invention belongs to the technical field of microwave vacuum electronics, and in particular relates to a design method of a traveling wave tube periodic permanent magnet focusing system. Background technique [0002] Traveling wave tube is an important microwave signal amplifier, which is widely used in military fields such as satellite communication, electronic countermeasures, and radar satellites. In the current period of rapid development of electronic countermeasures, high-performance traveling wave tubes have always been the preferred choice at home and abroad. The quality of the electron beam is an important factor for whether the traveling wave tube can achieve high performance. [0003] In addition to the electron gun that emits electrons, the main factor affecting the quality of the electron beam is the focusing system. As an important part of the traveling wave tube, the main function of the focusing system is to focus and maintain the...
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IPC IPC(8): G06F30/17G06F30/20
CPCG06F30/17G06F30/20
Inventor 胡权范家晖胡玉禄朱小芳杨中海李斌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA