Power supplies for the LNLS magnets

Different kinds of magnets are required for the construction of the LNLS accelerators: Focusing coils for the klystrons. Spectrometer. Bending magnets and quadrupoles for transport lines. Bending magnets and quadrupoles for transport lines. Bending magnets quadrupoles and sextupoles for the booster and storage ring. In each case the power supply is designed to optimize performance and cost based on a rational use of available electronic devices. The authors discuss in this paper three different kinds of power supplies that have been developed at LNLS. (1) Low voltage, low current: up to 100 V, 50 A. These power supplies are used for the Linac magnets: focusing lenses, solenoids and transport line. (2) Low voltage, medium current: up to 50 V, 150 A. These include power supplies for klystron focusing coils. (3) Medium voltage, medium current: up to 300 V. 150 A to be used in the spectrometer, and bending magnets for the booster. In the following the authors discuss some general aspects of the structure and performance for each of these and describe the main results obtained. 1 ref., 4 figs