Author: Li, Y.M.
Paper Title Page
MOPRC029 Experiment of Plasma Discharge on HWR Cavity for In-Situ Surface Cleaning Study 133
SPWR008   use link to see paper's listing under its alternate paper code  
 
  • A.D. Wu, Y. He, T.C. Jiang, C.L. Li, Y.M. Li, W.M. Yue, S.H. Zhang, H.W. Zhao
    IMP/CAS, Lanzhou, People's Republic of China
  • L.M. Chen
    Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
  • L. Yang
    IHEP, Beijing, People's Republic of China
 
  Hydrocarbons, which migrate from the vacuum bumps system, will absorb on the cavity surface after periods of operation. The contaminants can reduce the surface electron work function to enhance the field emission effect and restrict the cavity accelerating gradient. The room temperature in-situ plasma surface processing to clean the hydrocarbon contaminants can act as a convenient and efficient technology for the accelerator on line performance recovery. For better control of the discharge inside the cavity, the experiment works on a single HWR cavity aims to research the ignition between the swarm parameters (gas flow, pressure, forward power).  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPRC029  
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