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Santiago Kern, R.

Paper Title Page
MOP075 Breakdown Characteristics in DC Spark Experiments of Copper Focusing on Purity and Hardness 229
 
  • K. Yokoyama, S. Fukuda, Y. Higashi, T. Higo, S. Matsumoto
    KEK, Ibaraki
  • S. Calatroni, R. Santiago Kern, W. Wuensch
    CERN, Geneva
  • C. Pasquino
    Politecnico/Milano, Milano
  
 

To investigate the breakdown characteristic related to the differences in purity and hardness, four types of oxygen-free copper (OFC) materials, usual class 1 OFC with/without diamond finish, 7-nine large-grain copper and 6-nine hot-isotropic-pressed copper, were tested with the DC spark test system at CERN. Measurements of beta, breakdown fields and breakdown probability are discussed followed by the surface inspection mostly with SEM on the tested materials.