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Porcellato, A. M.

Paper Title Page
WEPMN087 Variable CW RF Power Coupler for 345 MHz Superconducting Cavities 2230
  • K. W. Shepard, Z. A. Conway, J. D. Fuerst, M. P. Kelly, G. J. Waldschmidt
    ANL, Argonne, Illinois
  • A. M. Porcellato
    INFN/LNL, Legnaro, Padova
  Funding: This work was supported by the U. S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC-02-06CH11357.

This paper reports the development of a 5-10 kW cw variable coupler for 345 MHz spoke-loaded superconducting (SC)cavities. The coupler inserts an 80K copper loop into a 5 cm diameter coupling port on several types of spoke-loaded cavity operating at 2 - 4K. The coupling loop can be moved during operation to vary the coupling over a range of 40 dB. The coupler is designed to facilitate high-pressure water rinsing and low-particulate clean assembly. Design details and operating characteristics are discussed.