The rapid cycling synchrotron (RCS) radio frequency accelerating systems have been prepared for the beam commissioning scheduled in the middle of September 2007. Installations of cavities, power supplies and amplifiers were carried out. And, the systems have been checked for the combined operations. For the main synchrotron (50GeV-MR) accelerating systems, the high power examinations and final adjustments are ongoing. And, installations are planned in September 2007. Here, we report on various issues that had been found and solved during the examination and installation period.
The Cooler Synchrotron COSY delivers proton and deuteron beams in the momentum range from 300 MeV/c to 3400 MeV/c. The different modes of operationinternal experiments with thin or thick targets, external target experiments with slow extraction or with very short extraction pulses -require different ion optical conditions. Polarisation experiments are of increasing interest in the COSY community. Results of the polarisation conservation during acceleration and the beam preparation for the different experimental requirements will be presented.
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