DESIGN CONSIDERATIONS FOR AN OVERMODED MW-CLASS TERAHERTZ SURFACE-WAVE OSCILLATOR
Results of theoretical and numerical simulation studies of a large cross section (overmoded), surface wave oscillator (SWO) with a cylindrical slow wave structure (SWS) are presented. The dispersion relation of the overmoded SWS, which express the phenomenon of mode competition, is calculated, and the distribution of electrical fields in the device is also determined. A novel particle in cell simulation tool is developed, aiming at the design of vacuum electron tubes in the terahertz regime.It is found that the steady-state, single-mode operation in this overmoded situation could be realized by the performance of surface wave at π point. Under the condition of 550kV beam voltage and 1kA beam current,2.5D PIC simulation predicted that the proposed SWO could deliver an output power above 40 MW at the frequency of about 0.144THz with perfect time plot and free spectrum characteristic.
Hai Zhang Jianguo Wang Changjiang Tong
School of Electronics and Information Engineering,Xian Jiaotong University,Xian 710049 School of Electronics and Information Engineering,Xian Jiaotong University,Xian 710049;Northwest I Northwest Institute of Nuclear Technology,Xian,710024,China
国际会议
17th International Conference on High-Power Particle Beams(第17届高功率离子束国际会议)
西安
英文
567-571
2008-07-06（万方平台首次上网日期，不代表论文的发表时间）