Author: Giaccone, B.
Paper Title Page
LCLS-II HE vCM Test Results: Newly Developed N-Doping Treatment and Plasma Processing  
  • B. Giaccone
    Fermilab, Batavia, Illinois, USA
  This talk presents the results of the LCLS-II HE verification cryomodule (vCM), which aimed at verifing that the cryomodule is capable to meet the project specification (Q0=2.7·1010 at 21 MV/m) with the newly developed nitrogen doping treatment. The test also carried out detailed studies on multipacting processing optimization and Q-factor quench degradation. Plasma processing was also carried out in four out of eight cavities in the cryomodule, showing its effectiveness in eliminating multipacting. These studies will be discussed.  
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