Title :
High power X-band coaxial amplifier experiments
Author :
Davis, T.J. ; Nation, J.A.
Author_Institution :
Cornell Univ., Ithaca, NY, USA
Abstract :
The authors consider the continuing studies on the development of X-band coaxial microwave amplifiers as a source for next generation linear colliders. Coaxial amplifiers employ an annular electron beam propagating between inner and outer drift tube conductors, a configuration which allows large increases in beam current over standard pencil beam amplifiers. Large average diameter systems may still be used without mode competition since transverse-magnetic mode cutoff frequencies are controlled by the separation between conductors. A number of amplifier configurations are being studied, all primed by a driven initial cavity which resonates around 9 GHz. Simple theories of coaxial systems and particle-in-cell simulations are presented, as well as initial experimental results using a 420-keV, 7-8 kA, 9-cm-diameter annular beam.<>
Keywords :
linear accelerators; microwave amplifiers; microwave tubes; nuclear electronics; 420 keV; 7 to 8 kA; 9 GHz; 9 cm; X-band coaxial amplifier experiments; annular electron beam; beam current; drift tube conductors; high power amplifiers; initial cavity; microwave amplifiers; next generation linear colliders; particle-in-cell simulations; pencil beam amplifiers; transverse-magnetic mode cutoff frequencies; Coaxial components; Conductors; Control systems; Cutoff frequency; Electron beams; Electron tubes; High power amplifiers; Microwave amplifiers; Microwave propagation; Particle beams;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164421
