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Gabriel, F.G.

Paper Title Page
TPPT054 CW Operation of the TTF-III Input Coupler 3292
 
  • J. Knobloch, W. Anders, M. Martin
    BESSY GmbH, Berlin
  • S. Bauer, M. Pekeler
    ACCEL, Bergisch Gladbach
  • S.A. Belomestnykh
    Cornell University, Laboratory for Elementary-Particle Physics, Ithaca, New York
  • A. Buechner, H. Buettig, F.G. Gabriel
    FZR, Dresden
  • D. Kostin, W.-D. Müller
    DESY, Hamburg
 
  Many newly proposed light sources, operating in the CW regime, are based on superconducting TESLA technology. Since this was originally developed for pulsed, 1-% duty-factor operation, it is important to determine the limitations of the TESLA cryomodule and its components when operated CW. Among the critical components is the RF input coupler. Two tests have been performed to determine the average power limit of the TTF-III system. First, room temperature tests up to 4 kW were performed at the Forschungszentrum Rossendorf. These permitted the calibration of computer codes developed to calculate the temperature distribution in the coupler. The programs then were used to make predictions for the (normal) cold operation of the coupler. At BESSY, the coupler test stand was assembled inside the HoBiCaT horizontal cryostat test facility to operate the coupler in an environment close to that of a real accelerator. The results of the two tests are presented here.