Title :
The axial monotron as a high-power microwave tube
Author :
Barroso, Joaquim J. ; Kostov, K.G.
Author_Institution :
Associated Plasma Lab., Nat. Inst. for Space Res., Sao Paulo, Brazil
Abstract :
A triple-beam monotron operating in the TM/sub 040/ mode at 6.7 GHz is presented. The system includes a simple structure where the elementary functions of electron bunching and energy transfer to the RF field are performed in a single circular cylindrical cavity, which makes the monotron a compact, lightweight device. The cavity geometry (radius 8.42 cm, length 1.0 cm) and injection beam energy (10 keV) are determined on the basis of a one-dimensional Lagrangian treatment neglecting space-charge forces. A 2.5-D particle-in-cell simulation is carried out for 0.4 cm thick beams at 80 A current giving 340 kW output power at the overall tube efficiency of 14.2% in close agreement with one-dimensional theory.
Keywords :
microwave tubes; 10 keV; 14.2 percent; 2.5D particle-in-cell simulation; 340 kW; 6.7 GHz; 80 A; RF field; circular cylindrical cavity; electron bunching; energy transfer; high-power microwave tube; one-dimensional Lagrangian model; triple-beam axial monotron; Electron beams; Energy exchange; Geometrical optics; Laboratories; Particle beam injection; Particle beams; Plasmas; Power generation; Radio frequency; Voltage;
Conference_Titel :
Pulsed Power Plasma Science, 2001. PPPS-2001. Digest of Technical Papers
Conference_Location :
Las Vegas, NV, USA
Print_ISBN :
0-7803-7120-8
DOI :
10.1109/PPPS.2001.1002156
