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

Volume

3

fYear

1997

fDate

12-16 May 1997

Firstpage

3156

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1997. Proceedings of the 1997

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-4376-X

Type

conf

DOI

10.1109/PAC.1997.753140

Filename

753140