SIS-Trafo-Elektronik

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Abstract: 

At GSI's accelerator facilities ion beam intensities usually are observed and measured with various types of current transformers (CT), matched to the special requirements at their location in the machines.
In the universal linear accelerator (UNILAC), and the high charge state injector (HLI) as well, active transformers with 2nd-order feedback are used, while passive pulse CTs and two DC-CTs based on the magnetic modulator principle are implemented in the heavy ion synchrotron (SIS) and the experimental storage ring (ESR). In the high-energy beam transfer lines (HEBT) the particle bunch extraction/reinjection is monitored with resonant charge-integrating types.
Since more than 10 years number and significance of beam current transformers for operating GSI's accelerators have grown constantly. Due to increased beam intensities following the last UNILAC upgrade, transmission monitoring and beam loss supervision with CTs have become the main tools for machine protection and radiation security purposes.
All CTs have been constructed and developed at GSI, since no commercial products or were available, when solutions were needed.

Author(s):    H. Reeg, N. Schneider
Contact:       h.reeg
Paper:          Download