Title :
34 GHz pulsed magnicon for linear collider application
Author :
Nezhevenko, O.A. ; Yakovlev, V.P. ; Ganguly, A.K. ; Hirshfield, J.L.
Author_Institution :
Budker Inst. of Nat. Phys., Novosibirsk, Russia
Abstract :
The feasibility of a third harmonic magnicon amplifier at 34.272 GHz as a RF source for future multi-TeV e+e- linear collider is examined. A third harmonic operation of the magnicon is necessary to stay within the constraints imposed by cathode loading, breakdown field and pulse heating of the conductive walls. A low emittance 500 keV, 200 A pencil electron beam interacts with the cylindrical TM110 mode in the deflection system and the cylindrical TM310 mode in the output cavity. The drive signal is at 11.424 GHz. Preliminary calculations show an efficiency of about 42% with output power in excess of 42 MW. The surface RF field in the cavities is in the range of 700-900 kV/cm which is below the breakdown level at 34 GHz for 1 μs pulse length. The maximal cathode loading does not exceed 15 A/cm2
Keywords :
accelerator RF systems; accelerator cavities; circular waveguides; electron accelerators; electron beams; linear colliders; microwave amplifiers; pulsed power supplies; 11.424 GHz; 200 A; 34.272 GHz; 500 keV; RF source; breakdown field; cathode loading; conductive walls; cylindrical TM110 mode; cylindrical TM310 mode; deflection system; linear collider; output cavity; pencil electron beam; positron+electron collider; pulse heating; pulsed magnicon; surface RF field; third harmonic magnicon amplifier; Apertures; Cathodes; Electrodes; Electron beams; Electrostatics; Indium phosphide; Magnetic fields; Power amplifiers; Pulse amplifiers; Radio frequency;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753140
