Development and testing of high power RF vector modulators

Author

Kang, Y.W. ; Wilson, J.L. ; Champion, M. ; Hardek, T. ; Kim, S.-H. ; McCarthy, M. ; Vassioutchenko, A.

Author_Institution

ORNL, Oak Ridge

fYear

2007

fDate

25-29 June 2007

Firstpage

2508

Lastpage

2510

Abstract

A fan-out RF power distribution system can allow many accelerating cavities to be powered by a single high-power klystron amplifier. High-power vector modulators can perform independent control of amplitudes and phases of RF voltages at the cavities without changing the klystron signal. A prototype high-power RF vector modulator employing a quadrature hybrid and two ferrite phase shifters in coaxial TEM transmission lines has been built and tested for 402.5 MHz. RF properties of the design and results of high power testing are presented.

Keywords

accelerator RF systems; accelerator cavities; ferrite phase shifters; klystrons; linear accelerators; modulators; power distribution; prototypes; radiofrequency amplifiers; transmission lines; RF power distribution system; TEM; accelerating cavities; ferrite phase shifters; high power RF vector modulators; klystron amplifier; klystron signal; linac; prototype; transmission lines; Acceleration; Amplitude modulation; Distributed amplifiers; High power amplifiers; Klystrons; Phase modulation; Power distribution; Radio frequency; Radiofrequency amplifiers; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2007. PAC. IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

978-1-4244-0916-7

Type

conf

DOI

10.1109/PAC.2007.4441299

Filename

4441299