Full-Scale Prototype Power Supply for SuperKEKB Final Focus Superconducting Magnets
A full-scale prototype power supply for the SuperKEKB final focus superconducting magnets was developed. The aiming specifications of the power supply are a dc rated output of 2 kA-10 V, a current setting resolution of <; 0.1 ppm, current stability of <; 2 ppm/8 h, a temperature coefficient of <; 0.01 ppm/ degree, and a current ripple of <; 1 ppm, where the assumed magnet inductance and cable resistance are 0.88-13.28 mH and 5 mΩ, respectively. High-power tests were performed, and expected results were obtained.