Excitation and voltage regulation for a 95 MVA surge-power generator

The excitation equipment of the 95 MVA surge-power generator, which feeds the main ring magnets of the 28 GeV proton synchrotron at CERN in Geneva, is subject to certain abnormal requirements. They relate both to its dynamic control characteristics and to its accuracy of voltage regulation. These are essential in order to comply with the most stringent conditions made with respect to reproducibility of magnet cycles over the whole duration of an experimenting period of three to four weeks. A special control concept also ensures optimum results in this respect for the dynamic transition regions within a pulse cycle. (4 refs).