Research Of W-Band Electron Cyclotron Maser Electron Optical System

Gyro-devices based on the theory of electron cyclotron maser have advantages in high power and efficiency, so Gyro-devices is vastly applied in areas of millimeter wave and sub-millimeter science and technology. Millimeter wave-band is between microwave and infrared, so compared to microwave system, millimeter wave systems are smaller in size and easier to be integrated, and it is very suitable for satellite and missile platform, play an important role in the development of military and industry. Scientists worldwide pay much attention on the research of gyrotron, and much R & D achievements have been obtained. Relevant research institutions in China have made much research on it, the UESTC have paid a lot of effort on the research of gyrotron and have reached the international advanced level. As an important part of the gyrotron, the study of the MIG is one of the key technologies of the research. In this paper, a single-anode MIG is designed for a W-band gyrotron, and EGUN MAGIC and CST-PS are used to design and optimize the MIG, the results present good. Key parameters have been analyzed in detail, and got some valuable conclusion for reference.The main work of this paper are listed as follows:1. Based on the theory of electromagnetic field and electron optics, discussed the electron motion equation.2. Elaborated the Principle of the MIG specifically, carried out a detailed theoretical analysis for the MIG, discussed design and optimization methods for the electron gun in detail.3. Know the theoretical basis and method of the EGUN,MAGIC and CST-PS, and familiar with the software. Designed a single-anode magnetron injection gun for a 106.4GHz gyrotron, establish the geometric model in EGUN,MAGIC and CST-PS respectively, simulated and optimized the structure. Listed optimized results of the three software respectively and compared the result.4. Make changes on elements in EGUN and MAGIC software, analyzes and summarizes the how these element influence the quality parameters of the electron beam, mainly discussed how the electric field, magnetic field and the geometric structure of the electron gun influence the electron beam guiding center radius, velocity ratio and velocity spread.5. Study on multi-frequency magnetron injection gun. Keeping the 106.4GHz electron gun structure remains unchanged, simulate the gun with EGUN and MAGIC in different magnetic fields, obtained electron beam of appropriate velocity ratio and small velocity spread for 84 GHz gyrotron and 110 GHz gyrotron.