Magnet Power Supplies for SuperKEKB:

Development of High-stability Power Supplies

Abstract

KEKB was the leading electron-positron collider in the world. Operation ceased in June 2010 in preparation for beginning the upgrade to SuperKEKB, the aim of which was to obtain a luminosity 40 times higher. For the SuperKEKB, over 2,000 magnet power supplies were recycled and approximately 300 power supplies were newly fabricated. The newly fabricated power supplies include high-performance power supplies: main bending/wiggler magnet power supplies and power supplies for final-focus superconducting magnets installed around the interaction point. High-power tests were performed and the results are reported.