A 3D numerical simulation to study the system of gyrotron

作者：Xia Meng-Zhong^*; Liu Da-Gang; Yan Yang; Peng Kai; Yang Chao; Liu La-Oun; Wang Hui-Hui

来源：Acta Physica Sinica, 2013, 62(11): 111301.

DOI：10.7498/aps.62.111301

• double-anode magnetron injection electron gun
• conformal FDTD
• the horizontal and vertical velocity ratio
• velocity spread

In order to break the limitation of gyrotron emission producing the ideal electron beam in the traditional gyrotron numerical simulation, this paper on the basis of theoretical analysis of structural parameters for the 94 GHz double-anode magnetron injection electron gun, by optimizing the grid plot of conformal FDTD algorithm, obtains the high-performance electron beam of the horizontal and vertical velocity ratio of 1.42 and the maximum velocity spread of 5.92%, By using the optimized electron gun to replace the traditional gy rotron emission in the numerical simulation of the gyrotron system and using the four-process parallel MPI in computation, we finally obtain a TE03 mode, 94 GHz, the average output power of about 40 kW, with on efficiency of 10.5% for the high-performance gyrotron oscillating tube.

• 出版日期2013-6