Microwave plasma chemical vapor deposition diamond output window for 3 mm gyro-traveling wave tube

被引：0
|
作者：
Zeng, Xu [1 ]
Wang, Efeng [1 ]
Li, Lili [1 ]
Feng, Jinjun [1 ]
机构：
[1] National Key Laboratory of Science and Technology on Vacuum Electronics, Beijing Vacuum Electronics Research Institute, Beijing , China
来源：
Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2014年 / 26卷 / 11期
关键词：
Sapphire - Microwaves - Gyroscopes - Diamonds - Heat resistance - Plasma CVD - Traveling wave tubes;
D O I：
10.11884/HPLPB201426.113003
中图分类号：
学科分类号：
摘要：
The sapphire window for 3 mm gyro-traveling wave tube(TWT) can not meet the design requirement of power capacity. To solve the problem, comparisons of several materials in power capacity and thermal shock resistance are carried out. A microwave plasma chemical vapor deposition(MPCVD) diamond window of low reflectivity and absorption for 3 mm high power gyro-TWT is designed by using numerical calculation and simulation. The results indicate that the designed MPCVD diamond window is appropriate for outputting TE01 mode, the bandwidth in which S11 is less than -20 dB is about 6 GHz. In addition, the thermal shock resistance of the window is good and the power capacity is about 61 kW in the condition of natural convection heat dissipation.
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