Title :
A nonlinear time-dependent simulation for helix traveling wave tubes
Author :
Peng, WeiFeng ; Wei, YiXue ; Hu, Yulu ; Yang, Zhonghai ; Li, Jianqing ; Li, Bin
Author_Institution :
Vacuum Electron. Nat. Lab., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A one dimensional nonlinear time-dependent theory for helix traveling wave tubes in beam-wave interaction is studied. A generalized electromagnetic field is applied to the expression of radio frequency field. The substitution of a spatial average over a wavelength for a time average over a wave period is used in the equation of radio frequency field. The space charge field of electron beam is treated by space charge wave model in company with the space charge coefficient. The effect of radio frequency field and space charge field to electrons is processed by the equations of the electron´s energy and phase. A simulating result of the time-dependent model is given.
Keywords :
electromagnetic fields; electron beams; microwave tubes; radiofrequency integrated circuits; space charge waves; travelling wave tubes; beam-wave interaction; electron beam; electron energy; electron phase; generalized electromagnetic field; helix traveling wave tube; nonlinear time-dependent simulation; radio frequency field; space charge coefficient; space charge field; space charge wave model; wave period; Computational modeling; Electron tubes; Equations; Frequency domain analysis; Mathematical model; Power generation; Radio frequency; beam-wave interaction; helix traveling wave tubes; time-dependent theory;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2011 IEEE International
Conference_Location :
Bangalore
Print_ISBN :
978-1-4244-8662-5
DOI :
10.1109/IVEC.2011.5746916
