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  • Open Access

Detailed design and optimization of ferroelectric tuners

Ilan Ben-Zvi1,*, Alick Macpherson2,†, and Samuel Smith2,‡

  • 1Physics and Astronomy Department, Stony Brook University, Stony Brook, New York 11794-3800, USA
  • 2CERN, CH-1211 Geneva, Switzerland

  • *Contact author: Ilan.Ben-Zvi@StonyBrook.edu
  • †Contact author: alick.macpherson@cern.ch
  • ‡Contact author: samuel.jack.smith@cern.ch

Phys. Rev. Accel. Beams 28, 093502 – Published 10 September, 2025

DOI: https://doi.org/10.1103/9sf7-wwyb

Abstract

A detailed, step-by-step design methodology of a ferroelectric fast reactive tuner (FE-FRT) capable of modulating Mega VAR reactive powers on a submicrosecond timescale is given. Closed expressions of values for all the components of the tuner are detailed, and tuner performance optimization is addressed, resulting in a figure of merit measure of FE-FRT tuner performance and use case applicability over a wide range of rf frequencies and reactive power levels. This enables addressing feasibility and rapid assessment of design parameters given an FE-FRT tuning scenario defined by required tuning range, cavity operating frequency, and cavity stored energy.

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