Title :
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
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;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4441299
