Paper | Title | Page |
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THPPC041 | 704 MHz Fast High-power Ferroelectric Phase Shifter for Energy Recovery Linac Applications | 3374 |
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Funding: Research supported by the U.S. Department of Energy, Office of High Energy Physics Development, tests, and evaluation of a fast electrically-controlled 704 MHz tuner for Energy Recovery Linacs that employs an electrically -controlled ferroelectric component are presented. The tuner is a refinement of an already tested prototype described elsewhere. In the new concept, a collection of ferroelectric assemblies behave as cavities configured as transmission components within a coaxial waveguide. Each assembly is based on a ring-like ferroelectric ceramic with its height, inner and outer diameters, and the shape of edges adjusted to insure a clean operating mode, and relatively low field strength. Several assemblies serve to widen the passband and increase tunability. The tuner is to deliver fast (~100-200 ns) phase adjustment from 0-to-100 degrees when biased by voltages from 0-to-15kV; the design promises to handle 50 kW CW and 900 kW of pulsed power. A scaled version is also considered to operate at 1300 MHz while handling 500 kW of pulsed power. Our latest findings, related issues, and plans for experiments are discussed. |
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