105/140 GHz双频兆瓦回旋管实现1.0 MW脉冲输出

1.0 MW pulse power achieved in 105/140 GHz dual-frequency MW-level gyrotron

摘要: 报道了聚变应用的MW级双频（105/140 GHz）回旋管的最新实验进展。该回旋管的谐振腔、准光模式变换器、输出窗采用了双频共用的设计，电子枪采用了双频复用的双阳极磁控注入枪，收集极采用单极降压。最新的实验表明：在重频1 Hz短脉冲条件下，在105 GHz点和140 GHz点，测试得到脉冲功率分别为710 kW和1.057 MW，对应总效率分别为34%和49%。这是国内首次在回旋管实验中实现1.0 MW功率输出。

Abstract: The progress of the 105/140 GHz MW gyrotron experiment aiming for fusion application is presented. The gyrotron employs dual-frequency design in triode magnetron injection gun, cavity, quasi-optical mode converter and window. In the experiment, pulse power of 710 kW at 105 GHz and 1.057 MW at 140 GHz were achieved at 1 Hz repetitive rate. The total efficiency is 34% and 49%, respectively. The experiment has firstly demonstrated the MW-level power output in the domestic quasi-optical gyrotron tests.