Title :
Large orbit gyroklystron development at Los Alamos
Author :
Stringfield, R.M. ; Wheat, R.M. ; Brown, D.J. ; Fazio, M.V. ; Kinross-Wright, John ; Carlsten, B.E. ; Rodenz, G. ; Faehl, R.J. ; Hoeberling, R.F.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
We have designed and are testing a large orbit gyroklystron amplifier for 1.3 GHz operation in 65 ns pulses. The ultimate power output goal is 500 MW with a gain in excess of 20 dB. This initial investigation is intended to lay the groundwork for operation at 11.4 GHz for particle accelerator applications, and also at frequencies of up to 35 GHz for other uses. Computational design has been performed with the resonant cavity code MAFIA and the particle in cell codes MERLIN and ISIS. Electron beam optics through a magnetic cusp was also studied with ISIS and MERLIN, and verified experimentally, to develop a suitable electron beam trajectory from the diode into the resonator region. Performance tests of a single stage device have been performed. An unsaturated gain of 43 dB has been observed using 4 kW of input drive, yielding an amplified output of 100 MW
Keywords :
cavity resonators; electron optics; gyrotrons; klystrons; microwave generation; nuclear electronics; particle accelerators; power amplifiers; ultra-high-frequency amplifiers; 1.3 GHz; 100 MW; 11.4 GHz; 35 GHz; 43 dB; 500 MW; 65 ns; ISIS; MAFIA; MERLIN; electron beam optics; electron beam trajectory; large orbit gyroklystron development; magnetic cusp; particle accelerator applications; particle in cell code; resonant cavity code; Electron beams; Intersymbol interference; Klystrons; Linear particle accelerator; Magnetic resonance; Operational amplifiers; Optical amplifiers; Optical resonators; Pulse amplifiers; Testing;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309421
