Title :
Relativistic electron beam propagation and experimental design for an X-band backward-wave oscillator
Author :
Rosenbury, E.T. ; Rhodes, Michelle ; Camacho, J. Frank ; Poole, B.R.
Abstract :
Summary form only given, as follows. An 8.5-GHz backward-wave oscillator (BWO) experiment has been designed and performed. Measurements of beam parameters including energy, current, and rotation were performed. Issues concerning microwave pulse shortening were investigated. The design values are Vbeam=1 MV, a beam current of 1-7 kA, and a pulse length of ≈60 ns. An annular beam is generated with possible radii 7, 8, and 9 mm. The beam is generated in, and is guided by, a strong, variable magnetic field of 0.6-3.0 T. Beam diagnostics include Rogowski coils, Faraday cup/CVRs, and witness plates. Microwaves are generated through interaction with a rippled-wall cylindrical waveguide. Microwave diagnostics include a microwave spectrometer, a dispersive delay line, and an LCD witness plate to view the mode pattern of the generated power
Keywords :
backward wave tubes; microwave oscillators; relativistic electron beam tubes; 0.6 to 3 T; 1 MV; 1 to 7 kA; 8.5 GHz; BWO; Faraday cup/CVRs; LCD witness plate; Rogowski coils; X-band backward-wave oscillator; annular beam; beam current; beam diagnostics; beam parameters; dispersive delay line; microwave diagnostics; microwave pulse shortening; microwave spectrometer; pulse length; relativistic electron beam propagation; rippled-wall cylindrical waveguide;
Conference_Titel :
Plasma Science, 1990. IEEE Conference Record - Abstracts., 1990 IEEE International Conference on
Conference_Location :
Oakland, CA, USA
DOI :
10.1109/PLASMA.1990.110638
