Xia Meng-Zhong, Yan Yang, Liu Da-Gang, Wang Ping, Huang Pei-Pei, Liu La-Qun, Wang Hui-Hui. 3D numerical simulations of the 110 GHz, 220 GHz coaxial cavity double-beam gyrotronJ. Acta Physica Sinica, 2013, 62(19): 191301. DOI: 10.7498/aps.62.191301