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- S. Kazakov, S. V. Shchelkunov
Omega-P, Inc., New Haven, Connecticut
- J. L. Hirshfield
Yale University, Physics Department, New Haven, CT
- A. Kanareykin
Euclid TechLabs, LLC, Solon, Ohio
- E. Nenasheva
Ceramics Ltd., St. Petersburg
- V. P. Yakovlev
Fermilab, Batavia, Illinois
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During the operation of accelerators it is often important to rapidly change the parameters of the RF system, such as cavity resonant frequency, coupling, or electrical length. For this purpose a fast L-band planar phase shifter has been designed, that has advantages compared to the coaxial scheme considered before by the authors (EPAC 06). The phase shifter is based on a new ferroelectric ceramic, whose permittivity changes with application of an external voltage. The switching time depends on only the external HV circuit and can by less than a few microseconds. The conceptual design and electrical parameters of the new phase shifter are presented, as are first results of low power measurements on a 1/3 model.
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