• B. Salvant
  EPFL, Lausanne
• D. Alesini, M. Migliorati, B. Spataro
  INFN/LNF, Frascati (Roma)
• G. Arduini, C. Boccard, F. Caspers, A. Grudiev, O.R. Jones, E. Métral, G. Rumolo, B. Salvant, C. Zannini
  CERN, Geneva
• R. Calaga
  BNL, Upton, Long Island, New York
• F. Roncarolo
  UMAN, Manchester

A detailed knowledge of the beam coupling impedance of the CERN Super Proton Synchrotron (SPS) is required in order to operate this machine with a higher intensity for the foreseen Large Hadron Collider (LHC) luminosity upgrade. A large number of Beam Position Monitors (BPM) is currently installed in the SPS, and this is why their contribution to the SPS impedance has to be assessed. This paper focuses on electromagnetic simulations and bench measurements of the longitudinal and transverse impedance generated by the horizontal and vertical BPMs installed in the SPS machine.