Author: Alhumaidi, M.
Paper Title Page
MOPO005 A Transverse Feedback System using Multiple Pickups for Noise Minimization 487
 
  • M. Alhumaidi, A.M. Zoubir
    TU Darmstadt, Darmstadt, Germany
 
  A new concept for using multiple pickups for estimating beam angle at the kicker is addressed. The estimated signal should be the driving feedback signal. The signals from the different pickups are delayed, such that they correspond to the same bunch. Consequently a weighted sum of the delayed signals is suggested as an estimator of the beam angle at the kicker. The weighting coefficients are calculated such that the estimator is unbiased, i.e. the output corresponds to the actual beam angle at the kicker for non-noisy pickup signals. Furthermore, the estimator must give the minimal noise power at the output among all linear unbiased estimators. Finally results for the heavy ions synchrotron SIS 18 at the GSI are shown.