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Mohos, I.

Paper Title Page
PS07 New Schottky-Pickup for COSY-Jülich 117
 
  • I. Mohos, J. Bojowald, J. Dietrich, F. Klehr
    IKP, Forschungszentrum Jülich GmbH, Jülich, Germany
 
  A new Schottky-pickup for the Cooler Synchrotron COSY at the Forschungszentrum Jlich was developed, tested and installed. The new pickup with four diagonally arranged plates replaces the two 1 m long Schottky-pickups used until now in COSY. The previous ones were removed mainly to gain space for new installations (e.g. rf-cavity, experimental devices), but also to increase the horizontal aperture. The available space for the new pickup is only 0.8 m. The pickup plates can be combined by means of relays to measure either in the horizontal or in the vertical plane. The pickup can also be used either as a sensitive broadband beam position monitor or as a tuneable narrowband pickup for Schottky-noise analysis with ultahigh sensitivity. A new method for resonant tuning of the Schottky-pickups for transversal measurements was developed. The differentially excited resonant circuitry enhances the sensitivity by about a factor of 30. The pickups are also used for dynamical tune measurements (tune meter) in the acceleration ramp.