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- M. Schwickert, T. Hoffmann, F. Kurian, H. Reeg, A. Reiter
GSI, Darmstadt, Germany
- W. Vodel
HIJ, Jena, Germany
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FAIR, the Facility for Antiproton and Ion Research, is presently entering the final layout phase at GSI. The injector chain consists of the existing linear accelerator UNILAC and synchrotron SIS18, plus a new dedicated 70 MeV high-intensity proton Linac. Along the injector chain to the main synchrotron SIS100 as well as in the beam transport lines, which connect synchrotrons, storage rings and experimental areas, beam transmission or vice versa beam loss have to be controlled very precisely. To supply a maximum intensity of 5·1011 U28+/spill to experiments and to prevent machine damages by intense beams, an integrated system for transmission and loss control is mandatory. While various kinds of beam current transformers control transmission online, intercepting Particle Detector Combinations (scintillators, ionization chambers, secondary electron monitors) are foreseen for optimization runs. External Beam Loss Monitors indirectly detect loss positions by measuring secondary particles. This contribution summarizes the requirements for the related detector systems and presents basic concepts for beam loss and transmission control at FAIR.
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