Author: Tsemo Kamga, J.A.
Paper Title Page
WEPD01 Observations of the Quadrupolar Oscillations at GSI SIS-18 629
 
  • R. Singh, P. Forck, P. Kowina
    GSI, Darmstadt, Germany
  • M. Gąsior
    CERN, Geneva, Switzerland
  • W.F.O. Müller, J.A. Tsemo Kamga, T. Weiland
    TEMF, TU Darmstadt, Darmstadt, Germany
 
  An asymmetric capacitive pick-up was installed at GSI SIS-18 for determination of the turn-by-turn beam quadrupole moment. The pick-up geometry is simulated to estimate its sensitivity towards the beam dipole and quadrupole moments. Turn-by-turn quadrupole moment measurement allows to calculate the frequency of beam-size oscillations. Recent beam measurements using this pick-up show clear indications of the beam-size oscillations induced by the injection mismatch. In this contribution, we present these measurements and discuss their relevance for the direct determination of the incoherent space charge tune shift.  
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