Title :
Numerical simulation results for improving the magnetron injection gun in 8 mm wavelength gyrotron
Author :
Zhang, S.-C. ; Luo, J.R.
Author_Institution :
Inst. of Electron., Acad. Sinica, Beijing, China
Abstract :
Some methods for improving the performances of magnetron injection gun of gyrotron, especially increasing the ratio of transverse to longitudinal velocity, are described in this paper. α=2.39 has been reached by modifying the magnetic field profile in adiabatic compression area, adjusting the equilibrium between electric field force and magnetic field force, and changing the tilt angle of the post focus pole. This value is much larger than the original value (α=1.4). Besides, the reversion, oscillation and interception of electron beam in the gun area can avoided by selecting gun parameters
Keywords :
electric fields; electron guns; gyrotrons; magnetic fields; magnetrons; 8 mm; adiabatic compression area; electric field force; gun parameters; gyrotron; interception; magnetic field force; magnetic field profile; magnetron injection gun; oscillation; post focus pole; reversion; tilt angle; transverse-to-longitudinal velocity ratio; Anodes; Boundary conditions; Cathodes; Electron beams; Equations; Gyrotrons; Magnetic fields; Mirrors; Numerical simulation; Voltage;
Conference_Titel :
Electronics and Radiophysics of Ultra-High Frequencies, 1999. International University Conference Proceedings
Conference_Location :
St Petersburg
Print_ISBN :
5-7422-0083-8
DOI :
10.1109/UHF.1999.787905
