Experimental and External-Proton-Beam Magnet Power-Supply Systems at the Bevatron

Magnet power-supply systems for both experimental and external-proton-beam (EPB) magnets used at the Bevatron are described as feedback control systems. Individual components contained in the systems are also described. The power-controlling component first used in the supplies was a three-phase magnetic amplifier. Silicon-controlled-rectifier (SCR) bridges are being used now. The requirements placed on the experimental magnet supply systems are ±0.1% current regulation with ±10% line-voltage perturbations occurring every pulse of the Bevatron. The EPB systems must track to at least ±0.1% a dynamic signal closely related to the proton beam energy. The performance criteria for EPB systems involve both error coefficients and transient response.