Power supplies of the synchrotrons for NUMATRON project

Power supplies of the synchrotrons that are expected to be constructed in ''NUMATRON'' project were designed. The two synchrotrons, 1st-Synchrotron and 2nd-Synchrotron, have the magnetic rigidities of 117.94KG-m and 457.91KG-m, respectively, so that the maximun energies in 1st-Synchrotron are 400Mev/u for all kinds of ion, and the ones in 2nd-Synchrotron are 4.46Gev/u for uranium ions and 12.83Gev for protons. Each power supply for the synchrotrons consists of motor-generator set, thyristor equipments and DC filters. The peak power and the average power are 46.9MW and 1.7MW, respectively for 1st-Synchrotron, and 42.5MW and 4.0MW, respectively for 2nd-Synchrotron. The repetition rate is 1Hz. The stabilities of the excitation current and the tracking errors of both synchrotrons are +- 10-4 and +- 5 x 10-4, respectively throughout the excitation pattern. In order to achieve these performances, the control system needs some computors. This report describes the constitution and the characteristics of the power supplies. (author)