Numerical simulation study of double-beam magnetron-injection guns for high-power gyrotrons

作者：Zhao, Qing^*; Dong, AiXiang; Li, HongFu; Luo, Yong; Wu, XiQiao; Liu, ShengGang

来源：IEEE Transactions on Plasma Science, 2007, 35(2): 402-406.

DOI：10.1109/TPS.2007.892724

• coaxial gyrotron with two beams (CGTB)
• double-beam coaxial magnetron-injector gun (DBMIG)
• MAGIC
• magnetron-injector gun (MIG)

This paper describes the detailed design of the double-beam coaxial magnetron-injection gun (DBMIG) for use in Ka-band coaxial gyrotron with two beams operating in the harmonic mode. The DBMIG operating voltage is 70 kV with a total beam current of 20 A, evenly divided among the beamlets, and provides two 70-kV 10-A beams with a velocity ratio of 1.5. The minimum of the transverse velocity spread and the axial velocity spread are about 3% and 5%, respectively. The emitter current density has been kept below 10 A . cm(-2) (space-charge limited). The primary computational tools used in the design process were the self-consistent particle-in-cell simulation code MAGIC.

• 出版日期2007-4
• 单位电子科技大学