Author: Eshraqi, M.
Paper Title Page
TUPB047 Passband Modes Excitation Triggered by Field Emission in ESS Medium Beta Cavity Prototype 489
 
  • J.F. Chen, M. Bertucci, A. Bosotti, P. Michelato, L. Monaco, R. Paparella, D. Sertore
    INFN/LASA, Segrate (MI), Italy
  • M. Eshraqi, M. Lindroos, S. Pirani
    ESS, Lund, Sweden
  • C. Pagani
    Università degli Studi di Milano & INFN, Segrate, Italy
  • T.P.Å. Åkesson
    Lund University, Department of Physics, Lund, Sweden
  
  During the first vertical test of ESS Medium Beta large-grain prototype cavity in INFN-LASA, a phenomenon of coexisting two passband-modes was observed – 4π/6 mode was excited spontaneously during the power rise of 3π/6 mode. This phenomenon is most likely due to the field-emission electrons that transfer their energy gained from the 3π/6 mode to the 4π/6 mode. In this paper, we present the experimental results, the excitation mechanism and the related simulation results.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-TUPB047  
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