Author: Yildirim, B.
Paper Title Page
TUPO027 Series Production of the Specific Waveguide Distribution for the European XFEL at DESY 380
TUPO024   use link to see paper's listing under its alternate paper code  
 
  • B. Yildirim, S. Choroba, V.V. Katalev, P. Morozov, Y. Nachtigal
    DESY, Hamburg, Germany
  • E.M. Apostolov
    Technical University of Sofia, Sofia, Bulgaria
 
  Series Production of the Specific Waveguide Distribution for the European XFEL at DESY B.Yildirim, S.Choroba, V.Katalev, P.Morozov, Y.Nachtigal, E.Apostolov The European XFEL uses 100 accelerating cryomodules. One RF station with 10 MW klystron supplies four cryomodules, each with eight cavities, through a waveguide distribution system. The RF station operates at 1.3 GHz, 1.37 ms pulse width and 10 Hz repetition rate. The results of the cryomodule test have shown however different maximum gradients for each cavity. The maximum gradient has been measured between 11 MV/m and 31 MV/m, which requires the cavity power from 29 kW to 230 kW. To operate with the maximum energy for every cryomodule, it is necessary to supply individual power to the cavity. In this case the weakest cavity problem can be avoided. For this goal a specific waveguide distribution has been developed. 100 waveguide distributions have been successfully tailored, produced and tested at the Waveguide Assembly Test Facility (WATF) at DESY and finally assembled to the cryomodules. We present the series production of the specific waveguide distributions at the WATF.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-TUPO027  
About • paper received ※ 06 September 2018      issue date ※ 18 January 2019  
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