用于毫米波辐射非致命生物效应的94 GHz回旋管设计与实验
Design and experiments of 94 GHz Gyrotron for non-lethal biological effects of millimeter wave radiation
1 Department of Geriatric Cardiology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital,Chengdu60072, China
2 School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu610054, China
图 & 表
图 1. 腔体结构与电场分布的关系图
Fig. 1. The cavity structure and distribution of electric field relationship
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图 2. 主模和竞争模式的归一化注波耦合系数随波束半径变化
Fig. 2. The normalized beam-wave coupling coefficient of the dominant and competitive modes varies with beam radius
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图 3. 工作模式和主要竞争模式的起振电流随外磁场变化，其中选取了30 kV的电子注电压、3.3 mm的电子注半径和1.3的横轴速比
Fig. 3. The starting current of the operating mode and the main competitive mode varies with the external magnetic field, where the beam voltage of 30 kV, beam radius of 3.3 mm and transverse-to-axial velocity ratio of 1.3 were selected
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图 4. 多模式注波相互作用的起振，其中电子注电压为40 kV，电子注电流为4 A，横轴速度比为1.3，电子注半径为3.3 mm
Fig. 4. The startup of multi-mode beam-wave interaction, where the beam voltage of 40 kV, beam current of 4A, transverse-to-axial velocity ratio of 1.3, beam radius of 3.3 mm
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图 5. 设计的磁控注入枪的轨迹和结构
Fig. 5. The trajectory and structure of the designed MIG
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图 6. YOZ平面电磁波传播过程总体示意图
Fig. 6. Overall diagram of electromagnetic wave transmission process on YOZ plane
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图 7. 电磁仿真输出窗口处场分布
Fig. 7. output window field distribution by Electromagnetic simulation
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图 8. 设计的内嵌准光学模式转换器回旋管图片
Fig. 8. Photo of the designed gyrotron with quasi-optical mode converter
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图 9. 距回旋管输出窗口0.6 m的热敏纸上的场模式分布
Fig. 9. The field pattern on a piece of paper at 0.6m from the gyrotron output window
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图 10. 固定在木板上的兔子
Fig. 10. Rabbit fixed on a wooden board
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表 1优化的电子注参数和磁控注入枪的几何结构
Table1. Optimized beam parameters and MIG geometry
| Parameters | Values |
|---|
| Beam voltage | 40 kV | | beam current | 4 A | | average radius | 3.3 mm | Beam pitch ratio Cavity Magnetic field | 1.3 3.540 T |
|
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表 2构成高斯分布9个模式的相对功率分布
Table2. The relative power distribution of the 9 modes that form the Gaussian distribution
TE4,3 3% | TE7,2 11% | TE10,1 3% |
|---|
TE3,3 11% | TE6,2 44% | TE9,1 11% | TE2,3 3% | TE5,2 11% | TE8,1 3% |
|
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表 3实验测试数据
Table3. Data from the experimental test
| Parameters | Values |
|---|
| Cathode voltage | 41.2 kV | | Cathode current | 3.6 A | Anode voltage Frequency | 8 kV 94.03 GHz | | Output power | 50.9 kW |
|
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潘媛媛, 王丽娜, 刘建卫, 王晖, 陈爽. 用于毫米波辐射非致命生物效应的94 GHz回旋管设计与实验[J]. 红外与毫米波学报, 2020, 39(2): 163. Yuan-Yuan PAN, Li-Na WANG, Jian-Wei LIU, Hui WANG, Shuang CHEN. Design and experiments of 94 GHz Gyrotron for non-lethal biological effects of millimeter wave radiation[J]. Journal of Infrared and Millimeter Waves, 2020, 39(2): 163.
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