Author: Zaplatin, E.N.
Paper Title Page
WEPPC008 FNAL Project X Conical Half-Wave Resonator Design 2221
  • E.N. Zaplatin
    FZJ, Jülich, Germany
  • A. Kanareykin
    Euclid TechLabs, LLC, Solon, Ohio, USA
  Funding: This work is supported by the DOE SBIR Program, contract # DE-SC0006302.
A high-intensity proton accelerator complex proposed at Fermi National Accelerator Laboratory (Project X) should provide beam for a variety of physics projects. The superconducting resonators of different types will be used as accelerating structures. Here we describe the design of conical Half-Wave Resonator that is considered as an option for a first accelerating cavity for β=v/c=0.11 with the resonance frequency 162.5 MHz. A careful study of the fields in the cavity has been carried out in order to optimize the electromagnetic parameters of the structure (peak fields, quality factor, dissipation power). An intensive investigations were provided of the liquid helium vessel design to minimize cavity frequency shifts from the external loads. Different tuning schemes have been studied to secure a frequency tuning range to cope with fabrication tolerances. The paper reports results of numerical simulations of the cavity shape optimization and structural analyses. The detailed developments of the structure using numerical coupled analyses allowed to minimize the level of expected microphonics in cavity.