Bonn Cyclotron Progress Report

Recent operating performance is reported and several features of the accelerator design are described. The pulse suppression is achieved using a deflection system in the internal region. It allows the suppression of up to 11 microscopic beam bursts with a suppression of satellite peaks better than 10−4. Also macroscopic pulsing has been made with the deflection system. An axial injection system including a buncher is under test. We are going to accelerate polarized protons and deuterons produced by an atomic beam ion source. An energy stabilization of the extracted beam is reached by a feedback signal derived from the monochromator system. A direct measurement of the energy spectrum of the analyzed beam has been performed in order to assure the assumed ion-optics.