Title :
A repetitive X-band relativistic backward-wave oscillator
Author :
Chen, Changhua ; Liu, Guozhi ; Huang, Wenhua ; Song, Zhimin ; Fan, Juping ; Wang, Hongjun
Author_Institution :
High-Power Microwave Res. Group, Northwest Inst. of Nucl. Technol., Xi´´an, China
fDate :
6/1/2002 12:00:00 AM
Abstract :
A repetitive X-band relativistic backward-wave oscillator (BWO) driven by a SINUS-881 accelerator is described. Relativistic electron beams with peak current of 5.4 kA and voltage of 610 kV at a repetition rate of 100 Hz were generated by the SINUS-881 and then guided through the corrugated waveguide by an axial magnetic field of 3.0 T produced by a superconducting magnet. An electron collector was used to collect the electron beams in order to mitigate the effect of secondary emission electrons and to prevent ionization and breakdown near the electron beam dump. This BWO produces a microwave pulse power of 1.1 GW at a 100-Hz repetition rate, a frequency of 9.38 GHz, a pulse duration of 23 ns, and a power transforming efficiency of 33%.
Keywords :
backward wave oscillators; relativistic electron beam tubes; relativistic electron beams; secondary electron emission; 1.1 GW; 3.0 T; 5.4 kA; 610 kV; 9.38 GHz; BWO; SINUS-881 accelerator; axial magnetic field; corrugated waveguide; electron beam dump; electron beams; electron collector; microwave pulse power; relativistic electron beams; repetitive X-band relativistic backward-wave oscillator; secondary emission electrons; superconducting magnet; Electromagnetic heating; Electromagnetic waveguides; Electron beams; Electron emission; Ionization; Microwave oscillators; Power generation; Pulse generation; Superconducting magnets; Superconducting microwave devices;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2002.801656
